Single aerial photography frame, part of the 1939 CDM project. Coordinates indicate the frame center point, or where line indexes are unavailable, the approximate project-wide or index sheet center point. Scale=20000, Media Type= Photographic Paper, Coordinate Source: Digitized Line Index
Summary
Single aerial photography frame, part of the 1939 CDM project. Coordinates indicate the frame center point, or where line indexes are unavailable, the approximate project-wide or index sheet center point. Scale=20000, Media Type= Photographic Paper, Coordinate Source: Digitized Line Index
