MLA

Parker, Peter, 1804-1888. Additional Canton Hospital photographs. 9, folder 4. 1924, 1947, and n.d.. https://collections.library.yale.edu/catalog/16808852.

APA, 6th edition

Parker, Peter, 1804-1888. (["9, folder 4"])(1924, 1947, and n.d.)[Additional Canton Hospital photographs]. https://collections.library.yale.edu/catalog/16808852.