Cite

[Tintype of two unidentified buffalo soldiers with musical instruments]

MLA

[Tintype of Two Unidentified Buffalo Soldiers with Musical Instruments]. 0AD. https://collections.library.yale.edu/catalog/2009687.

APA, 6th edition

[Tintype of two unidentified buffalo soldiers with musical instruments]. (0 C.E.). [Studio portraits, Tintypes]. https://collections.library.yale.edu/catalog/2009687.