MLA
Hudgins, F. L. Group Portrait of Veteran Reunion at the Gettyburg Battlefield in Gettysburg, Pennsylvania. 1913. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 8, Folder 38. https://digital.library.emory.edu/purl/532d7wm416-cor.
APA, 6th edition
Hudgins, F. L. (1913). Group portrait of veteran reunion at the Gettyburg battlefield in Gettysburg, Pennsylvania (Box 8, Folder 38) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/532d7wm416-cor.
Chicago
Hudgins, F. L. “Group Portrait of Veteran Reunion at the Gettyburg Battlefield in Gettysburg, Pennsylvania.” Black-and-white photographs. Civil War Collection, 1913. Box 8, Folder 38. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/532d7wm416-cor.