28.M22 [Cottage Observation Post, Northwest of Locre] July 20, 1918
Covers an area approximately equivalent to square M22 on the corresponding WWI map sheet 28. Negative roll 53B, photo number 855. Camera focal length 8 inches. Annotations on recto: north arrow pointing to the upper-left. Area circled in green ink and labelled, "Cottage O.P." indicating the location of an observation post. WWI Aerial Photograph Collection: Box 3, Envelope 138.