20.P26 [Shifter Cottage South of Stadenreke, Houthulst Forest] December 6, 1917
Covers an area equivalent to portions of squares P20, 26 and 27 on the corresponding WWI map sheet 20. Negative roll 9B, photo 82. Annotations on recto: north arrow pointing to the upper-left with an "x" on the opposite side of the photo. WWI Aerial Photograph Collection: Box 1, Envelope 115.