Collected and Arranged by Francis J. Reynolds and C. W. Taylor. Collier's New Photographic History of the World's War. Including Sketches, Drawings, and Paintings Made by Artists at the Front. Photographs by the official photographers accompanying each army. New York: P. F. Collier & Son, 1919.
"American Ambulance Workers Off Duty. It is worth noting that this little group of young Americans are enjoying their idle time with musical instruments and cigarettes, both much appreciated gifts for our men at the front."