MLA

Simpson, Randolph Linsly, 1927-1992. Unknown photographer Joseph R. Douglass, grandson of Frederick Douglass, with violin. Early 20th century photograph, 7 x 5. Box 24, folder 1022. 1905. https://collections.library.yale.edu/catalog/10733715.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 24, folder 1022"])(1905)[Unknown photographer Joseph R. Douglass, grandson of Frederick Douglass, with violin. Early 20th century photograph, 7 x 5]. https://collections.library.yale.edu/catalog/10733715.