Here is an incredible collection of colorized photos from Willie Brown that shows American police cars from between the 1920s and 1940s.
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| 1926 Kearny, NJ Police Vehicle |
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| 1932 Columbus, Ohio Police Car (a new high tech radio equipped cruiser) |
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| 1935 Ohio State Highway Patrol Ford |
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| 1937 Ford with large speakers |
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| 1940 Kansas State Highway Patrol Vehicle |
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| 1940 Michigan State Police Car |
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| 1940 Ohio Highway Patrol |
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| 1942 British Columbia Highway Patrol Ford |
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| 1942 Kentucky Highway Patrol Cars |
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| 1942 Los Angeles Police Vehicles |
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| 1942 Salt Lake City Police Hudson Commodore |
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| 1943 Grandview Heights Police Car |
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| 1946 Ford Deluxe of the Ohio Highway patrol |
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| 1948 Franklin County Ohio Sheriff's Deputy |
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| 1948 Fulton County Police Vehicle |
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| 1948 Oregon State Police Vehicle |
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| 1949 Arnansas Pass, Texas Police Vehicle |
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| 1949 North Dakota State Patrol Pontiac |
