MLA
Hale, W. B. Ruins of Old Stone House in Ghent N.Y., Once Used for Secreting Slaves in Ante-Bellum Days. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 75. https://digital.library.emory.edu/purl/501pg4f4tk-cor.
APA, 6th edition
Hale, W. B. Ruins of old stone house in Ghent N.Y., once used for secreting slaves in Ante-Bellum days (Box 75) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/501pg4f4tk-cor.
Chicago
Hale, W. B. “Ruins of Old Stone House in Ghent N.Y., Once Used for Secreting Slaves in Ante-Bellum Days.” Postcards. Robert Langmuir African American Photograph Collection, n.d. Box 75. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/501pg4f4tk-cor.