From 1972 through 1977, the Environmental Protection Agency embarked upon an effort to photographically document subjects of environmental concern.
The photographic project was called “DOCUMERICA”.
This photograph of two Minneapolis Police Officers was part of the “DOCUMERICA” project.
It was taken on Nicollet Mall in June of 1973 by the the photographer Donald Emmerich.
It is catalogued in the National Archives under the number 551464 and with the caption, “REGULAR POLICE PATROLS HELP KEEP DOWN THE NUMBER OF BICYCLE THEFTS ON NICOLLET MALL.”
The squad car is from the Sixth Precinct and it is very hard to read but it may be squad number 2429.
Photograph from the U. S. National Archives