Oblique angle photo. Covers an area equivalent to square U20 on the corresponding WWI map sheet 51b. Annotations on recto: "N.W. Bullecourt" printed in white; map references "U.20b.2.2." and "U.20.V.4.2." printed in white with an "x" marking each location. Annotations on verso: "51B U20, HINDENBURG LINE" printed in pencil. WWI Aerial Photograph Collection: Box 2, Envelope 53.