MLA
Grand Secretary-Treasurer, Mrs. Maggie L. Walker and Grand Council Force, I.O. St. Luke, Richmond, Va. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 70. https://digital.library.emory.edu/purl/368kd51c8z-cor.
APA, 6th edition
Grand Secretary-Treasurer, Mrs. Maggie L. Walker and Grand Council Force, I.O. St. Luke, Richmond, Va. (Box 70). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/368kd51c8z-cor.
Chicago
“Grand Secretary-Treasurer, Mrs. Maggie L. Walker and Grand Council Force, I.O. St. Luke, Richmond, Va.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 70. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/368kd51c8z-cor.