MLA
Whitney, H. O. Military Recruited Young Men in Suits or Sailor Uniform with Dog. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 19. https://digital.library.emory.edu/purl/0343r228ct-cor.
APA, 6th edition
Whitney, H. O. Military recruited young men in suits or sailor uniform with dog (Box 19) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0343r228ct-cor.
Chicago
Whitney, H. O. “Military Recruited Young Men in Suits or Sailor Uniform with Dog.” Black-and-white photographs. Langmuir Deposit - Sept 2020, n.d. Box 19. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0343r228ct-cor.