MLA
East Tiers of Unique Roosts : Topsy's Chicken Roost, Chutes at the Beach, in San Francisco. 1939. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 69. https://digital.library.emory.edu/purl/10966t1g4b-cor.
APA, 6th edition
East tiers of unique roosts : topsy's chicken roost, chutes at the beach, in San Francisco (Box 69). (1939). [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/10966t1g4b-cor.
Chicago
“East Tiers of Unique Roosts : Topsy's Chicken Roost, Chutes at the Beach, in San Francisco.” Postcards. Robert Langmuir African American Photograph Collection, 1939. Box 69. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/10966t1g4b-cor.