MLA

Whitney, Eli, 1765-1825. 1811 October-December. Box 2, folder 40, reel 2 | reel 2U. 1811 October-December. https://collections.library.yale.edu/catalog/32521573.

APA, 6th edition

Whitney, Eli, 1765-1825. (["Box 2, folder 40, reel 2 | reel 2U"])(1811 October-December)[1811 October-December]. https://collections.library.yale.edu/catalog/32521573.