MLA
F., and L. Photo Service. Maintenance and Operations - Electrical Engineering Equipment. 1940. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 8, Folder 4. https://digital.library.emory.edu/purl/0106wwq03j-cor.
APA, 6th edition
F., & Service, L. P. (1940). Maintenance and Operations - Electrical engineering equipment (Box 8, Folder 4) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0106wwq03j-cor.
Chicago
F., and L. Photo Service. “Maintenance and Operations - Electrical Engineering Equipment.” Black-and-white photographs. EU Office of Alumni Publications Photos Deposit Collection 1, 1940. Box 8, Folder 4. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0106wwq03j-cor.