MLA
Children Sitting in a Wagon, and Standing behind It, on the Lawn of a House. 1947. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 5. https://digital.library.emory.edu/purl/56341ns1x5-cor.
APA, 6th edition
Children sitting in a wagon, and standing behind it, on the lawn of a house (Box 5). (1947). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/56341ns1x5-cor.
Chicago
“Children Sitting in a Wagon, and Standing behind It, on the Lawn of a House.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, 1947. Box 5. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/56341ns1x5-cor.