20.O36 [Marechal Farm and Colombo House, Houthulst Forest] December 10, 1917
Covers an area equivalent to portions of squares O36, P31, U6 and V1 on the corresponding WWI map sheet 20. Negative roll 9B, photo number 108. Annotations on recto: north arrow pointing to the right with an "x" on the opposite edge of the photo. Annotations on verso: 3 pencilled circles labelled, "Huts V.1.a," "MARECHAL Fm.," and "COLOMBO Ho." "N. M. L." printed in pencil between 2 lines. Placement of annotations corresponds to their exact locations on the recto. WWI Aerial Photograph Collection: Box 3, Envelope 48.