MLA
S. H. Knox & Co. (Duluth, Minn.). Fishing on the Wabash, Peru, Ind. : an African American boy standing in the water fishing. March 22, 1911. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/699n2z34z0-cor.
APA, 6th edition
S. H. Knox & Co. (Duluth, Minn.). (March 22, 1911)[Fishing on the Wabash, Peru, Ind. : an African American boy standing in the water fishing]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/699n2z34z0-cor.
Chicago
S. H. Knox & Co. (Duluth, Minn.), Fishing on the Wabash, Peru, Ind. : an African American boy standing in the water fishing, March 22, 1911, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/699n2z34z0-cor.