Route about May 3-9, 1805
MLA
Clark, William, 1770-1838. Route about May 3-9, 1805. Box 1, folder 15. circa 1803-1810. https://collections.library.yale.edu/catalog/2002457.
APA, 6th edition
Clark, William, 1770-1838. (["Box 1, folder 15"])(circa 1803-1810)[Route about May 3-9, 1805]. https://collections.library.yale.edu/catalog/2002457.