Covers an area equivalent to squares V1, 2, 7 and 8 on the corresponding WWI map sheet 20. Negative roll 9B, photo number 215. Annotations on recto: north arrow pointing to upper-right. "Gravel Fm." printed in white with arrow pointing to its location. Oval area outlined in white dots. "c." printed in white in 2 locations on the photo. WWI Aerial Photograph Collection: Box 1, Envelope 76.