20.P25 [Massena and Thann Crossroads, Houthulst Forest] December 6, 1917
Covers an area equivalent to squares P19, 25, 26 and 32 on the corresponding WWI map sheet 20. Negative roll 9B, photo 81. Annotations on recto: north arrow pointing to the upper-left with an "x" on the opposite edge of the photo. Annotations on verso: "movement & defences. Much activity in edge of wood near SCHAAP BALIE sidings" written and underlined in pencil. Placement of "MESSENA + Rds," "THANN + Rds," "TRESIZE COPSE," and "COVERBEEK" marked in pencil corresponding to their exact locations on the recto. WWI Aerial Photograph Collection: Box 3, Envelope 52.