MLA

Streeter, Thomas W. (Thomas Winthrop), 1883-1965. Texian Grand March 1835. Box 9, folder 243. 1947. https://collections.library.yale.edu/catalog/17440790.

APA, 6th edition

Streeter, Thomas W. (Thomas Winthrop), 1883-1965. (["Box 9, folder 243"])(1947)[Texian Grand March 1835]. https://collections.library.yale.edu/catalog/17440790.