Cite

[No. 68: Charles Robert "Bob" Cross]

MLA

[No. 68: Charles Robert "Bob" Cross]. 1915. https://collections.library.yale.edu/catalog/11679667.

APA, 6th edition

[No. 68: Charles Robert "Bob" Cross]. (1915). [Photographs, Portraits, Slides (glass)]. https://collections.library.yale.edu/catalog/11679667.