20.V1 [Site of German hutments southwest of Schaap Balie] December 26, 1917
Covers an area equivalent to portions of squares V1, 2, 7, and 8 on the corresponding WWI map sheet 20. Negative roll 9B, photo 215. Annotations on recto: north arrow pointing to the upper-right. WWI Aerial Photograph Collection: Box 1, Envelope 74.