Cite

Iowa Cavalry, 6th and 7th

MLA

Sully, Alfred, 1821-1879. Iowa Cavalry, 6th and 7th. Box 5, folder 75. n.d.. https://collections.library.yale.edu/catalog/14735021.

APA, 6th edition

Sully, Alfred, 1821-1879. (["Box 5, folder 75"])(n.d.)[Iowa Cavalry, 6th and 7th]. https://collections.library.yale.edu/catalog/14735021.