20.O24 [Solfege Crossroads, Houthulst Forest] January 3, 1918
Covers an area equivalent to squares O24 an 30 and P19 and 25 on the corresponding WWI map sheet 20. Negative roll 9B, photo 323. Annotations on recto: north arrow pointing to right. "Solfege Cross Roads" printed in white. WWI Aerial Photograph Collection: Box 1, Envelope 105.