MLA
Lester, L. L. Souvenir of Rollo Looping the Loop without a Loop on Skates. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 69. https://digital.library.emory.edu/purl/255z612jq8-cor.
APA, 6th edition
Lester, L. L. Souvenir of Rollo looping the loop without a loop on skates (Box 69) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/255z612jq8-cor.
Chicago
Lester, L. L. “Souvenir of Rollo Looping the Loop without a Loop on Skates.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 69. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/255z612jq8-cor.