20.U12 [Pascal Farm and Tranquille House Northeast of Langemarck] December 26, 1917
Covers an area equivalent to squares U12 and 18 on the corresponding WWI map sheet 20. Negative roll 9B, photo 226. Annotations on recto: north arrow pointing to the upper-right. "PASCAL FM" and "TRANQUILLE HO" printed in red ink. Line in red ink running roughly parallel to line in photo. WWI Aerial Photograph Collection: Box 1, Envelope 86.