MLA

Clark, William, 1770-1838. October 29 - November 13, 1804. Box 1, folder 61. 1803-1805. https://collections.library.yale.edu/catalog/2003001.

APA, 6th edition

Clark, William, 1770-1838. (["Box 1, folder 61"])(1803-1805)[October 29 - November 13, 1804]. https://collections.library.yale.edu/catalog/2003001.