Cite

Route about April 7-14, 1805

MLA

Clark, William, 1770-1838. Route about April 7-14, 1805. Box 1, folder 21r. circa 1803-1810. https://collections.library.yale.edu/catalog/2002463.

APA, 6th edition

Clark, William, 1770-1838. (["Box 1, folder 21r"])(circa 1803-1810)[Route about April 7-14, 1805]. https://collections.library.yale.edu/catalog/2002463.