Cite

59. Officer of the 2nd U.S. Cavalry

MLA

59. Officer of the 2nd U.S. Cavalry. 0AD. https://collections.library.yale.edu/catalog/2017421.

APA, 6th edition

59. Officer of the 2nd U.S. Cavalry. (0 C.E.). [Photographic postcards, Photographic prints, Photographs]. https://collections.library.yale.edu/catalog/2017421.