Abstract: The New York Police Department (NYPD) Aviation Unit photographs and index includes 3,638 negatives dating from circa 1935 to 1982 and a partial index of the images dating from 1971 to 1982. There are also five notes from within the NYPD pertaining to the reproduction of negatives. The images document the operations and investigations of the Aviation Unit, and most are aerial photographs. The collection has been digitized and can be accessed via the "Digital...