MLA
Overly, Charles H. The Governor's Palace Kitchen, Williamsburg, Virginia : Two African American Women Cooks. 1965. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 74. https://digital.library.emory.edu/purl/808v9s4mzh-cor.
APA, 6th edition
Overly, C. H. (1965). The governor's palace kitchen, Williamsburg, Virginia : two African American women cooks (Box 74) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/808v9s4mzh-cor.
Chicago
Overly, Charles H. “The Governor's Palace Kitchen, Williamsburg, Virginia : Two African American Women Cooks.” Postcards. Robert Langmuir African American Photograph Collection, 1965. Box 74. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/808v9s4mzh-cor.