Route about October 11-13, 1805, and return camps for May 3 and 4, 1806
MLA
Clark, William, 1770-1838. Route about October 11-13, 1805, and return camps for May 3 and 4, 1806. Box 2, folder 37. circa 1803-1810. https://collections.library.yale.edu/catalog/2002485.
APA, 6th edition
Clark, William, 1770-1838. (["Box 2, folder 37"])(circa 1803-1810)[Route about October 11-13, 1805, and return camps for May 3 and 4, 1806]. https://collections.library.yale.edu/catalog/2002485.