Oblique angle photo. Covers an area equivalent to squares L20 to 28 on the corresponding WWI map sheet 62d. Negative roll 5AE, "O" for Oblique, photo number 257. Camera focal length 10 1/4 inches. Annotations on recto: north arrow pointing to the left. "Etinehem 62d.L.25.b.3.6.," "Yakko Copse" and map reference "L.28.c.7.2." labelled in white with arrows pointing to their locations. WWI Aerial Photograph Collection: Box 4, Album photo 32.