20.P25 [Massena and Thann Cross Roads] December 10, 1917
Covers an area equivalent to portions of squares P25, 31, and 32 on the corresponding WWI map sheet 20. Negative roll 9B, photo 121. Annotations on recto: north arrow pointing to the left with an "x" on the opposite edge of the photo. WWI Aerial Photograph Collection: Box 1, Envelope 15.