20.U5 [Owl's Wood, Houthulst Forest, Ypres Salient] December 28, 1917
Covers an area equivalent to portions of squares U5, and 6 on the corresponding WWI map sheet 20. Site of German huts between Panama House and Colombo House. Negative roll 9B, photo 244. Annotations on recto: north arrow pointing up and slightly to the left. "OWLS WOOD" printed in green ink. WWI Aerial Photograph Collection: Box 1, Envelope 97.