MLA
Thank You Reply from Father Quills of the Child Saving Union of the Mission of Our Lady of Mercy to Emma F. Kammore. 1910. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 34. https://digital.library.emory.edu/purl/672b8gtj07-cor.
APA, 6th edition
Thank you reply from Father Quills of the Child Saving Union of the Mission of Our Lady of Mercy to Emma F. Kammore (Box 34). (1910). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/672b8gtj07-cor.
Chicago
“Thank You Reply from Father Quills of the Child Saving Union of the Mission of Our Lady of Mercy to Emma F. Kammore.” Photographic postcards. Robert Langmuir African American Photograph Collection, 1910. Box 34. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/672b8gtj07-cor.