Draft of the Columbia River, route about October 28-November 4, 1805, and return camps for March 30 and March 31-April 6, 1806
MLA
Clark, William, 1770-1838. Draft of the Columbia River, route about October 28-November 4, 1805, and return camps for March 30 and March 31-April 6, 1806. Box 2, folder 50v. circa 1803-1810. https://collections.library.yale.edu/catalog/2002499.
APA, 6th edition
Clark, William, 1770-1838. (["Box 2, folder 50v"])(circa 1803-1810)[Draft of the Columbia River, route about October 28-November 4, 1805, and return camps for March 30 and March 31-April 6, 1806]. https://collections.library.yale.edu/catalog/2002499.