MLA

Streeter, Thomas W. (Thomas Winthrop), 1883-1965. Signed memorandum, Austin, Texas. Box 5, folder 278. 1834 Nov 15. https://collections.library.yale.edu/catalog/17256677.

APA, 6th edition

Streeter, Thomas W. (Thomas Winthrop), 1883-1965. (["Box 5, folder 278"])(1834 Nov 15)[Signed memorandum, Austin, Texas]. https://collections.library.yale.edu/catalog/17256677.