Draft of the Columbia River, Point Adams, and south along the coast [and] Map from a "Clott Sopp Ind.," about early 1806
MLA
Clark, William, 1770-1838. Draft of the Columbia River, Point Adams, and south along the coast [and] Map from a "Clott Sopp Ind.," about early 1806. Box 2, folder 53r. circa 1803-1810. https://collections.library.yale.edu/catalog/2002503.
APA, 6th edition
Clark, William, 1770-1838. (["Box 2, folder 53r"])(circa 1803-1810)[Draft of the Columbia River, Point Adams, and south along the coast [and] Map from a "Clott Sopp Ind.," about early 1806]. https://collections.library.yale.edu/catalog/2002503.