concentration camp complex - National Archives and Records ...

part vi
Cartographic Records/Aerial Photography
Records cited below may be ordered for viewing in the Cartographic and
Architectural Branch, Room 3050, at the National Archives at College
Park, MD.
RECORD GROUP 373, RECORDS OF
THE DEFENSE INTELLIGENCE AGENCY
VI.1 The Defense Intelligence Agency (DIA) was founded as an interservice
agency in the Department of Defense in 1961 to produce and disseminate
defense intelligence. DIA maintained most of the surviving aerial photo­
graphic records produced or acquired by U.S. military agencies in World War
II. Two series described below include photographic coverage of Austrian
sites at or near Mauthausen and its sub­camps.
VI.2 Aerial Photography: U.S.­ and Allied­flown reconnaissance missions
during World War II are documented on negative film for areas of Europe,
including Austria. Individual canisters of film are identified by bar code num­
bers. Some film is stored off­site, requiring a 24­hour retrieval period after
an order is placed. The research process requires several steps: establishing
the site’s coordinates (latitude and longitude), correlation of maps and
marked overlays to ascertain the original data (“symbol” and exposure num­
bers), and the correlation of these numbers with the original negative (ON)
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