MLA
B., et al. Student Union Building : Paul Quinn College : Waco, Texas, Built in 1950 : the Oldest Negro College in Texas. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 70. https://digital.library.emory.edu/purl/9289ghx3jx-cor.
APA, 6th edition
B., W News Agency, W., & T. Student union building : Paul Quinn College : Waco, Texas, built in 1950 : the oldest Negro college in Texas (Box 70) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/9289ghx3jx-cor.
Chicago
B, Waco W News Agency, and Texas. “Student Union Building : Paul Quinn College : Waco, Texas, Built in 1950 : the Oldest Negro College in Texas.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 70. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/9289ghx3jx-cor.