62b.A21 [Canal du Nord to River Oise north of Bellicourt] March 24, 1917
Photo accompanies tactical map of same area (WWIAIR309, macrepo 4864, Box 3, Envelope 62). Photo covers an area equivalent to squares A21, 27, and 28 on the corresponding WWI map sheet 62b. Negative roll 22N, photo number 2570. Annotations on recto: north arrow pointing up. "PLATE IV" and "Area:- Canal du Nord to River Oise" printed in the margin. Annotations on verso: "C" printed in pencil. WWI Aerial Photograph Collection: Box 3, Envelope 63.