Cite

Coastline south of the mouth of the Columbia River

MLA

Clark, William, 1770-1838. Coastline south of the mouth of the Columbia River. Box 2, folder 49. circa 1803-1810. https://collections.library.yale.edu/catalog/2002497.

APA, 6th edition

Clark, William, 1770-1838. (["Box 2, folder 49"])(circa 1803-1810)[Coastline south of the mouth of the Columbia River]. https://collections.library.yale.edu/catalog/2002497.