MLA
Colby, Dorothy G. North Road in St. Croix, U.S. Virgin Islands : Native Carts on the Road to Market : Flamboyant Trees in Bloom to Right Center. 1964. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 77. https://digital.library.emory.edu/purl/9182jm63zq-cor.
APA, 6th edition
Colby, D. G. (1964). North Road in St. Croix, U.S. Virgin Islands : native carts on the road to market : flamboyant trees in bloom to right center (Box 77) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/9182jm63zq-cor.
Chicago
Colby, Dorothy G. “North Road in St. Croix, U.S. Virgin Islands : Native Carts on the Road to Market : Flamboyant Trees in Bloom to Right Center.” Photographic postcards. Robert Langmuir African American Photograph Collection, 1964. Box 77. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/9182jm63zq-cor.