Van Aalten at work on mural. Identification on verso (handwritten and stamped): Federal Art Project W.P.A.; Photographic Division; 235 East 42nd Street; New York City Artists at work on mural, 6 E. 42 St., 5th floor.; Date: 6/3/38; Negative No.: 3041-1; Photographer: Von Urban.
Archives of American Art, Smithsonian Institution Washington, D.C. 20560