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Rick Kretschmer's License Plate Archives |
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Rick Kretschmer's License Plate Archives |
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My "Pictorial History" pages are intended to be a supplement to the information found in the ALPCA Archives. I am providing additional details and additional photos not found in the archives, and clarifying information when appropriate. When the ALPCA archives cover a subject in great detail, I do not repeat that detail here. I sincerely hope that you find this information useful.
If you find an error or have additional information, or can provide a plate or a photo of a plate that I'm missing, please send me an e-mail. There's a link to my e-mail address at the bottom of every page. Please note that all plates shown that are credited to another person are plates that I am still seeking for my own collection.
Latest noteworthy updates:
- Aug. 15, 2007 - Clarified the assignment of county-coded suffix letters on current fire and rescue vehicle plates.
- Dec. 25, 2007 - Split this page out from the Maryland government-owned vehicle plate page. Added several candid photos of plates in current use, taken by myself and others. Added several photos from the collection of "Whitey". Added a table of letter codes used on emergency vehicle plates.
On this page - Maryland emergency vehicle plates
Introduction
Maryland State Police
Other state police and fire agencies
Local police and sheriff's departments
Local fire and EMS departments
Other plates often mistaken for local fire department and EMS plates
Private ambulance plates
Letter codes used on Maryland emergency vehicle plates
Related links
Maryland government license plates can be a real challenge to positively identify or accurately date. Many of these plates looked nothing like regular Maryland plates, and/or were undated and used for many years or even decades, even while the regular, non-government plates were being replaced annually. On the other hand, during the past couple of decades, some agency-specific government plates have been reissued with new designs, sometimes repeatedly, while the regular plates and generic government plates soldier on, unchanged.
I observed Maryland license plates first-hand on a daily basis from the early 1960s to early 1990s, so I can often shed light on this confusion. However, in some cases, what I've written is based on educated guesswork, or very limited observation, or maybe even faulty memory, and so it's just about certain that I've gotten something wrong somewhere. Again, if you spot what you think is an error, or have additional or clarifying information, or can send a photo that you've taken of a plate not already shown, please send me an e-mail and help make this page more accurate and complete.
The Maryland State Police (MSP) was established in 1935. It took over the role of the Commissioner of Motor Vehicles State Police Force in patrolling the highways of Maryland, and had additional law enforcement duties assigned to it as well.
It's a challenge to positively identify the age of most Maryland State Police license plates. With the exception of the 1985 50th Anniversary plates, they've always been undated and used for multiple years.
Circa 1935-1956 Maryland State Police In the early days, the Maryland State Police consisted primarily of motorcycle officers, and so most MSP license plates were smaller, motorcycle plates. The ones I've seen photos of are different in size and bolt hole location and shape from regular Maryland motorcycle plates. Early MSP cycle plates were black on yellow, and had the words Maryland State Police, one word above the other, occupying the left and center portions of the plate, with a numeric plate number on the right side. According to one report, motorcycles were retired from MSP duty approximately in the late 1940s.
Older Maryland State Police car plates all seem to be 15 inches long, which would seem to imply that they were manufactured in 1935 and/or 1936. Regular Maryland car license plates were 15 inches long through 1936, and 13 inches long from 1937 through 1956 expirations. I'm not familiar with there being any 13 inch long state police plates. I'm guessing that MSP car plates continued to be made after 1936 on the old 15 inch 1936 plate blanks, perhaps being both made and used well into the 1950s, despite their size. These plates were black on yellow, and had the words "Maryland State Police" stacked vertically on the left, with a serial number on the right. As with the 15 inch State Roads Commission plates, versions with and without small corner bolt holes were made. If any 13 inch MSP plates do exist, they would probably be from the latter part of the 1937-1956 period.
Circa 1956-1984 Maryland State Police 
Circa 1956-1984 Barrack C - Cumberland (Sells photo / plate); circa 1970-1984 plates from Headquarters - Pikesville ("Whitey" photo / plate), Barrack A - Waterloo (O'Connor photo / plate), and the Aviation Command ("Whitey" photo / plate); circa 1983-1984 State Police motorcycle (Cooper photo / plate)As license plate dimensions became standardized at 6 inches by 12 inches across North America during the mid-1950s, car manufacturers began making vehicles that could not accommodate larger license plates. Therefore, it became necessary to retire the old 15 inch plates. Between about the mid-1950s and 1984, Maryland State Police car plates were 12 inches long and were painted black on yellow, with the words "Maryland State Police" embossed on the plate. There were minor design variations during this period that are a challenge to pinpoint time-wise. Perhaps the best method of identifying approximate manufacture dates is to compare state police plate design changes to corresponding design changes on regular, dated Maryland license plates.
- Long bolt slots: Regular Maryland plates with expiration dates between 1957 and 1964 had long bolt slots, so it's likely that state police plates with long bolt slots were manufactured between 1956 and 1963. However, these plates could have been used through 1984.
- Short bolt slots: Regular Maryland plates with expiration dates between 1965 and 1970 had short bolt slots, so it's likely that state police plates with short bolt slots were manufactured between 1964 and 1969. However, these plates could have been used through 1984.
- Round bolt holes: Regular Maryland plates with expiration dates beginning in 1971 had round bolt holes, so it's likely that state police plates with round bolt holes were manufactured and used between 1970 and 1984.
According to one source, the Maryland State Police resumed motorcycle patrols approximately 1983 or 1984, after a 35 year absence. Perhaps in anticipation of the upcoming 1985 50th Anniversary MSP plates, the state didn't go to much trouble to make up special MSP motorcycle plates. The plates were made on the standard motorcycle base, even including a sticker box (which of course was not used), but were painted black on yellow rather than the normal black on white. Low serial numbers were issued, probably starting at 1. There was nothing on the plate to identify it as a police plate.
Circa 1985 Maryland State Police 
circa 1985 Barrack A - Waterloo (Doernberg plate)For 1985, to commemorate the 50th anniversary of the Maryland State Police, vehicles were replated with graphic plates made on a reflective white background. These plates were very closely patterned after the 1984 350th Anniversary optional issue plates issued to the general public. The dates 1935 and 1985 were screened in the upper corners, and the legend "50th Anniversary" was screend along the bottom edge. On the left side of the plate was a large MSP emblem. Serial numbers were also screened. It's reported that these plates were actually used for several years beyond 1985 until individual cars were removed from service. I don't think I've seen a motorcycle version of this plate.
Circa 1986-1996 Maryland State Police 
Circa 1986-1996 plates from Barrack L - Forestville ("Whitey" photo / plate), the Commercial Vehicle Enforcement Division (O'Connor photo / plate), and a marked State Police vehicle dedicated for use by the State Highway Administration at road construction sites ("Whitey" photo / plate)From the late 1980s until the late 1990s, State Police plates were similar to the previous 1985 50th Anniversary plates, but were undated, and had the words "State Police" at the bottom, rather than "50th Anniversary". Again the plates were black on a white reflective background, had the MSP logo on the left side, and were completely screened. There was a motorcycle version of this plate with the same design features as the full sized plates.
Circa 1997-present Maryland State Police
Current plates in actual use from Barrack H - La Plata, and Barrack T - LeonardtownBeginning about 1997, Maryland State Police plates have gone retro, and at first glance appear to be very similar to the 1956-1984 plates. Like the plates of old, the current ones are all-embossed, non-graphic, and sport black characters on a yellow background. But there are a few distinct differences. First, the new plates read "Maryland State Trooper" rather than the earlier "Maryland State Police". (In case you were wondering, the agency name is still Maryland State Police, but the individual officers have always been referred to as "state troopers".) Second, the new plates are reflective rather than painted, and they have a hologram running down the center of the plate indicating the date of manufacture.
Current motorcycle plates look similar to the full-sized plates, but they're full screened rather than embossed.
Office of the Commissioner of Motor Vehicles / Department of Motor Vehicles Maryland's motor vehicle agency was known as the Office of the Commissioner of Motor Vehicles from 1910 to 1943, the Department of Motor Vehicles from 1943 to 1971, and the Motor Vehicle Administration (part of the Department of Transportation) from 1971 to present.
Prior to the establishment of the Maryland State Police as a separate entity, the Commissioner of Motor Vehicles had under his authority a unit known as the State Police Force. The State Police Force consisted of motorcycle officers who patrolled the state's highways from 1921 until it was replaced by the Maryland State Police in 1935. The undated plates used on these motorcycles were colored white on red, and the body of the plate consisted of the letters "C.M.V." followed by a distinguishing number. Some know examples have no other identification, while others have embossed at the top and bottom of the plate "Maryland" and "State Police", respectively.
I know of at least two different undated Maryland plates with the stacked words "Dept. Motor Vehicles" on the left side. Both have the state name along the top edge and "Drive Safely" along the bottom edge. Serial numbers of up to three digits are on the right body of the plate. One such plate is colored silver on black, while the other is black on yellow. Both have long bolt slots top and bottom. The black plate also has small bolt holes in each corner. If I were to guess, I'd say that the black plate was made in the 1943-1947 period, and the yellow plate appears to have been made between 1956 and 1963. It's unknown how long either of these plates were used or what purpose DMV vehicles might have served.
Maryland Toll Facilities Police / Maryland Transportation Authority Police 
Circa 1971-1993 Toll Facilities Police (Doernberg photo / plate); current Transportation Authority Police (McDevitt photo, plate in actual use)The Maryland Toll Facilities Police was formed in 1971 with the merger of the State Roads Commission Bridge Guards unit and the Harbor Tunnel Special Police Force. Like its name implies, the Toll Facilities Police was responsible for law enforcement at Maryland's various toll bridges and tunnels. Its vehicles bore white on blue license plates that looked like Maryland local government police plates, but it was in fact a state agency.
In 1994, the Maryland Toll Facilities Police was renamed the Maryland Transportation Authority Police, and over the next few years its responsibilities were expanded to assume law enforcement at the state-owned Baltimore-Washington International Airport from the Maryland State Police, and at other transportation-related locations such as marine terminals in the Port of Baltimore. Again, Transportation Authority Police plates looked like local government police plates, this time with a generic police logo on the left side of an otherwise standard-looking black on white Maryland license plate. The two-letter stacked prefix used to distinguish this agency was "T/A".
Sometime in the late 1990s or early 2000s, someone decided that the Maryland Transportation Authority Police should have license plates that didn't look like city or county cop car plates, and the stacked "T/A" plates were replaced with new plates of a unique design. These new plates are also black characters on reflective white plates, but with the words "Maryland Transportation Authority" across the top in place of the usual state name, and "Police" along the bottom, with the agency's sheild on the left side of the plate.
Maryland Natural Resources Police In years past, this state agency used white on blue police plates in the same style as the Maryland Toll Facilities and local police department plates.
This agency currently uses very unusual yellow on black plates with a yellow border. The state name appears in yellow at the top of the plate in the familiar script font, and the words "Natural Resources Police" are stacked one above another taking up most of the body of the plate. The vehicle unit number is stacked vertically on the far right side of the plate.
State Fire Marshall's Office This organization uses standard current Maryland plate blanks, with the legend "State Fire Marshall" at the bottom and the agency's logo at the left of the plate. The serial characters are screened, however.
1955 and prior local police and sheriff's vehicles
Maryland city and county police and sheriff's plates manufactured 1955 or earlier were similar to the white on blue plates made and used from 1956 to about 1990. However, the plate dimensions differed from the current 12 inch by 6 inch size used since 1956. 15 inch long plates could date from the 1910s to 1936 or possibly later, and 13 inch long plates could have been made from 1937 to 1955 and used possibly later.
Circa 1956-1990 local police and sheriff's vehicles
Circa 1956-1990 police plates from Greenbelt (Doernberg plate), and Montgomery County (O'Connor photo / plate)
Circa 1970-1990 police plates from Howard County, Maryland National Capital Parks, Montgomery County, Prince George's County, and Takoma Park (all Doernberg plates)
(The Maryland National Capital Park and Planning Commission is a bi-county agency that administers local parks in Montgomery and Prince George's Counties.)During this time, local police and sheriff's plates were invarialbly undated, painted white on blue, and identified the name of the law enforcement agency in embossed letters. Usually they also had an embossed serial number which corresponded to the vehicle's unit number. The exact plate designs varied over time, and also from one law enforcement agency to another. Since these were undated plates, they were used for exetended periods of time. Similar to Maryland State Police plates, the best way to determine an approximate date of manufacture is to compare characteristics such as bolt slots or holes to those on regular, dated Maryland plates.
- Long bolt slots: Regular Maryland plates with expiration dates between 1957 and 1964 had long bolt slots, so it's likely that local police plates with long bolt slots were manufactured between 1956 and 1963. However, these plates could have been used through the early 1990s.
- Short bolt slots: Regular Maryland plates with expiration dates between 1965 and 1970 had short bolt slots, so it's likely that local police plates with short bolt slots were manufactured between 1964 and 1969. However, these plates could have been used through the early 1990s.
- Round bolt holes: Regular Maryland plates with expiration dates beginning in 1971 had round bolt holes, so it's likely that local police plates with round bolt holes were manufactured and used between 1970 and the early 1990s.
It should be noted that some local law enforcement agencies chose to run generic local government plates on even their marked patrol cars, rather than use specific law enforcement plates, particularly in the case of the city of Baltimore for many years. Also, Maryland Toll Facilities Police, a state police force, and probably other state government police units as well, used plates in the white on blue format usually reserved for local law enforcement plates.
Local government police motorcycles used smaller versions of the plain white on blue plates.
Circa 1985-1990 local police and sheriff's vehicles 
1980s Edmonston Police (Doernberg plate); 1980s Hyattsville Police (O'Connor photo / plate)In the late 1980s, a few local law enforcement agencies had graphic plates made. There did not seem to be any consistency between agencies, other than all of the plates I've seen were black on white and completely screened. I'm not completely sure whether these were just prototypes or were actually used on vehicles. I'm suspicious of the high serial number on the Edmonston plate; the town of Edmonston had fewer than 1,000 residents in the 2000 census.
Circa 1990-present local police and sheriff's vehicles
Current law enforcement plates in actual use from the Garrett County Sheriff's Department (Sallmen photo), Laurel Police, Montgomery County Police, Prince George's County Police, and a Baltimore Police motorcycle (McDevitt photo)Since the early 1990s, local law enforcement plates have become more consistent and somewhat resemble Maryland organizational plates. They have screened two-letter prefixes and embossed serial numbers on the standard reflective white background with the screened, script state name at the top. Regardless of the jurisdiction, police vehicle plates from various cities, towns, counties, local park departments, school districts, and community college and state university campuses have the same generic "Police" logo with a large state shield on a yellow background, placed on the left side of plate. Sheriff's department plates have an identical logo, but with the word "Sheriff" instead. In each case, the name of the jurisdiction or law enforcement agency is screened at the bottom of the plate. Plate serial numbers are in the format x/x 0000 and each number is unique statewide when combined with the prefix. Prefixes used on these plates are listed at the bottom of this page.
However, a good number of local law enforcement units have elected to just run the standard "L/G" local government plates on their vehicles, rather than use these special police or sheriff plates.
Local police motorycycles are issued similar plates, which also use two letter prefixes like the full sized plates. However, some examples have the agency name at the bottom, and some don't.
The plates in this section apply to local government fire and rescue departments and volunteer fire companies and volunteer rescue squads. Ambulances owned by private businesses are class C vehicles and are issued regular plates, with embossed expiration dates or expiration stickers, depending on the year. These are addresed in in the next section, below.
1955 and prior local fire and rescue vehicles Maryland fire and rescue vehicle plates manufactured 1955 or earlier were similar to the white on red plates made and used from 1956 to about 1990. However, the plate dimensions differed from the current 12 inch by 6 inch size used since 1956. 15 inch long plates could date from the 1910s to 1936 or possibly later, and 13 inch long plates could have been made from 1937 to 1955 and used possibly later.
Circa 1956-1986 local fire department and rescue/EMS vehicles 
Circa 1964-1986 Bethesda Fire Department (Doernberg plate); circa 1970-1986 Branchville Volunteer Fire Company (Doernberg plate); circa 1970-1986 Easton Fire Department (Doernberg photo / plate)During this time, local fire department and EMS plates were invarialbly undated, and identified the name of the fire department or rescue squad in embossed letters. These plates were nearly always white on red, but occassionally were red on white. More often than not, any red on white plate would have been used on an ambulance owned by a fire department, or on a resuce squad vehicle. The exact plate designs varied over time, and also from one fire department or rescue squad to another.
Most of these plates I've seen have an embossed serial number, usually with a single letter prefix. The letter prefix, if present, would identify the apparatus type: A for ambulance, E for engine, etc. I haven't identified or deciphered all of the letter codes, but I take a stab at it at the bottom of this page. Single digit numbers and possibly low two-digit numbers would identify the vehicle number within a fire station. Otherwise, two- and three-digit numbers would consist of the station or company number within a county, and then the vehicle number within the fire station. For example, the Branchville Volunteer Fire Company is fire station number 11 in Prince Georges's County. Unit number 8 in this station happened to be an ambulance, so this vehicle received plate A/118. This does not imply that they had eight ambulances; rather, they apparently either had at least 8 total pieces of equipment of varying types, or they just designated an ambulance as "unit number 8". One of the fire stations in Bethesda is Montgomery County fire station 6; unit 3 at this station was a pumper engine, so it received plate E/63. It's certainly possible that other plate numbering schemes were also used, however.
Since these were undated plates, they were used for exetended periods of time. Similar to various police plates, the best way to determine an approximate date of manufacture is to compare characteristics such as bolt slots or holes to those on regular, dated Maryland plates.
- Long bolt slots: Regular Maryland plates with expiration dates between 1957 and 1964 had long bolt slots, so it's likely that local fire/EMS plates with long bolt slots were manufactured between 1956 and 1963. However, these plates could have been used through the late 1980s.
- Short bolt slots: Regular Maryland plates with expiration dates between 1965 and 1970 had short bolt slots, so it's likely that local fire/EMS plates with short bolt slots were manufactured between 1964 and 1969. However, these plates could have been used through the late 1980s.
- Round bolt holes: Regular Maryland plates with expiration dates beginning in 1971 had round bolt holes, so it's likely that local fire/EMS plates with round bolt holes were manufactured and used between 1970 and the late 1980s.
It should be noted that at least one local rescue squad chose to run generic local government plates on their vehicles, rather than use specific rescue squad plates.
Circa 1987-present local fire department and EMS vehicles 
Two current Howard County Fire Department, one with "Co." (O'Connor photo / plate) and the other with "County" (plate in actual use); two current Laurel Volunteer Fire Company (plates in actual use); two current Prince George's County Fire Department (plates in actual use); current Baltimore City Fire Department / Box 414 Association (Mattes photo of plate in actual use)
(The Box 414 Association is a non-profit organization that provides canteen and other support services to the Baltimore City Fire and Police Departments. The license plate above apparently indicates that the vehicle is dedicated for use by the association but actually owned by the Baltimore City Fire Department.)Since the late 1980s, fire department and EMS plates have been made on standard Maryland plate blanks, but they are distinctive in that they contain no graphics, and all text on the plates is embossed with red characters, other than the familiar screened, script "Maryland" at the top. The text typically includes the name of the agency and a rather small plate number below it.
The plates I've seen have formats x-000-x or x-0000-x. Plate numbers are not assigned sequentially, but rather each is a code identifying the vehicle and where it's based. The letter prefix and the numbers are typically assigned as was often done on the white on red plates. I don't have it completely figured out, but the prefix letter seems to indicate the class of apparatus (A = ambulance, E = pumper engine, T = ladder truck, etc.), and in at least some cases where the plates name the specific fire station, the numeric portion of the serial is coded to identify the station number within a county and the individual vehicle within the station. For example, the Laurel Volunteer Fire Company is Station 10 within Prince Georges' County, so the numeric portions of the serials start with "10". Vehicles not assigned to a specific station obviously do not use this format; these seem to just use numbers that could not be used in the station-specific numbering scheme.
The suffix letter specifies the county in which the vehicle is based. Maryland has 23 counties, plus the city of Baltimore which is not part of any county. The county suffix letters are assigned in alphabetical county name order, starting with: A = Allegany County. Letters I and O are skipped, so the last county alphabetically is: Y = Worcester County. Fire and rescue vehicles based in the city of Baltimore are identified with suffix letter Z. A complete list of prefix and suffix codes and their meanings is found at the bottom of this page.
The plates with the tall serial numbers seem to be older, while the plates with the shorter serial numbers are more recently issued.
For some reason, most fire and rescue vehicles do not display front plates, but some do. Also, some fire and rescue vehicles display the generic "L/G" local government plates rather than agency-specific plates.
NOT fire truck plates!
1975 Firemen's Association member plate; 1980 Firemen's Association member plate (Sells photo / plate); 2008 Earleigh Heights Vol. Fire Co. member plate (plate in actual use)The plates shown above may seem to be official fire department plates used on firefighting apparatus, but none of them are. All are organizational plates issued to individual firefighters for their personal vehicles.
The first two plates, and others similar to them, were issued from about 1972 to 1986 to members of the Maryland State Firemen's Association, which is a volunteer firefighters' organization. In the case of the red on white plate, it was issued to a firefighter's personal truck, not an actual fire truck.
The rightmost plate, like numerous others similar to it, is an organizational plate issued to a member of the specific fire station identified on the plate, for use on his or her personal vehicle.
Suffice to say, graphic plates were not and are not used on actual firefighting equipment, but only on firefighters' personal cars and trucks. Likewise, for any black on white plates or plates with stickers. See more firefighters' and other types of organizational plates on my History of Maryland Organizational Plates page.
1959 private ambulance or funeral vehicle; 1980 private ambulance or funeral vehicleAmbulances owned by private ambulance businesses, as opposed to fire departments or rescue squads, are issued standard Maryland license plates. Private ambulances, as well as funeral vehicles such as hearses, are both considered Class "C" vehicles and are issued the same plates. Therefore, a class "C" plate, off of a vehicle and without an accompanying registration card, cannot be specifically identified as having been issued to an ambulance. At least since 1954 expiration plates, class "C" plates have had a non-passenger serial format with the first or only serial letter always "C". (However, the first letter being "C" doesn't automatically mean that the plate is an ambulance/funeral plate.) Private ambulance plates are covered more thoroughly on the History of Maryland Bus and Taxi Plates page.
Maryland State Police letter prefixes Other law enforcement letter prefixes, circa 1990-present no letter – Headquarters - Pikesville, or motorcycle unit
A – Barrack A - Waterloo (Jessup)
AV – Aviation Command
B – Barrack B - Frederick
BWI – Baltimore-Washington International Airport (discontinued)
C – Barrack C - Cumberland
CMV – Commissioner of Motor Vehicles State Police Force
(white on red plates from the 1920s and 1930s)
CV – Commercial Vehicle Enforcement Division
D – Barrack D - Bel Air
E – Barrack E - Salisbury
F – Barrack F - North East
G – Barrack G - Westminster
H – Barrack H - La Plata
I – Barrack I - Easton
J – Barrack J - Annapolis
K9 – Dog handler unit
L – Barrack L - Forestville
M – Barrack M - JFK Memorial Highway (Perryville)
MC – Motorcycle unit
N – Barrack N - Rockville
O – Barrack O - Hagerstown
P – Barrack P - Glen Burnie
Q – Barrack Q - College Park
R – Barrack R - Golden Ring (Baltimore)
S – Barrack S - Centreville
SF – Strike Force unit
SHA – State Highway Administration use
T – Barrack T - Leoonardtown
TAC – Tactical Assault unit
U – Barrack U - Prince Frederick
V – Barrack V - Berlin
W – Barrack W - McHenry
X – Barrack X - Princess AnneA/A – Anne Arundel County Police
B/A – Baltimore County Police
B/C – Baltimore City Police
C/P – Various state university and community college campus police units
H/C – Howard County Police
M/C – Montgomery County Police
M/G – Various smaller city and town police departments
P/G – Prince George's County Police
P/P – Various local park police units
S/A – Various county sheriff's departments
S/P – Various school district police units
T/A – Maryland Transportation Authority Police (discontinued)Fire and EMS letter prefixes Fire and EMS letter suffixes, circa 1987-present A – Ambulance
C – Chief? Command? Car? - used on cars and SUVs
E – Engine (pumper)
S – Support? - spotted on a trailer
T – Truck (ladder)
U – Utility - used on pickup trucks, SUVs, vans
V – unknown - spotted on a carA – Allegany County
B – Anne Arundel County
C – Baltimore County
D – Calvert County
E – Caroline County
F – Carroll County
G – Cecil County
H – Charles County
J – Dorchester County
K – Frederick County
L – Garrett County
M – Harford County
N – Howard County
P – Kent County
Q – Montgomery County
R – Prince George's County
S – Queen Anne's County
T – St. Mary's County
U – Somerset County
V – Talbot County
W – Washington County
X – Wicomico County
Y – Worcester County
Z – Baltimore City
Other Maryland emergency vehicle license plates on the web
Statetrooperplates.com - Maryland State Police page - Thorough coverage of the history of State Police license plates.
National Police Car Archives - Maryland section - Extensive photo gallery of police cars from the last decade or so, many with license plates visible.
Andrew Pang's License Plates - Maryland License Plates section
The License Plate Gallery - Maryland Organizational, Government & Optional Issue Plates page by Tim O'Connor
The Plate Shack - Maryland section
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