MLA

Travis, William Barret, 1809-1836. Signed memorandum, Austin, Texas. Box 5 | Folder 278. 1834 Nov 15. https://collections.library.yale.edu/catalog/17256677.

APA, 6th edition

Travis, William Barret, 1809-1836. (["Box 5 | Folder 278"])(1834 Nov 15)[Signed memorandum, Austin, Texas]. https://collections.library.yale.edu/catalog/17256677.