MLA

Murphy, Gerald, 1888-1964. Photographs of Murphy family. Box 214. 1920s, undated. https://collections.library.yale.edu/catalog/10608757.

APA, 6th edition

Murphy, Gerald, 1888-1964. (["Box 214"])(1920s, undated)[Photographs of Murphy family]. https://collections.library.yale.edu/catalog/10608757.