51b.W28 [South of Marquion, East of Sains-lez-Marquion] September 25, 1918
Covers an area equivalent to squares W28 and 29 on the corresponding WWI map sheet 51b. Negative roll 5AL, photo 266. Camera focal length 8 1/4 inches. Annotations on recto: north arrow pointing up. WWI Aerial Photograph Collection: Box 4, Album Photo 40.