MLA
Mrs. Lena Mason's Chautauqua Meetings, Philadelphia, Pa. 1908. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 74. https://digital.library.emory.edu/purl/269m37pvq1-cor.
APA, 6th edition
Mrs. Lena Mason's Chautauqua meetings, Philadelphia, Pa. (Box 74). (1908). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/269m37pvq1-cor.
Chicago
“Mrs. Lena Mason's Chautauqua Meetings, Philadelphia, Pa.” Photographic postcards. Robert Langmuir African American Photograph Collection, 1908. Box 74. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/269m37pvq1-cor.