20.V2 [Wire Entanglement Near Schaap-Balie] December 26, 1917
Covers an area equivalent to portions of squares V2, and 8 on the corresponding WWI map sheet 20. Negative roll 9B, photo 233. Annotations on recto: north arrow pointing to the upper-right. Arrows drawn with red ink and labelled, "wire" indicate the orientation and extent of a band of wire entanglement detectable in the photo as a dark shaded line running parallel to the arrows. A semi-circle drawn in red ink indicates the location of further, unlabelled defenses. WWI Aerial Photograph Collection: Box 1, Envelope 93.