Cite

Evans's Map 6 (the Expedition's route about October 22-November 1, 1804)

MLA

Lewis, Meriwether, 1774-1809. Evans's Map 6 (the Expedition's route about October 22-November 1, 1804). Box 1 | Folder 9. 1804. https://collections.library.yale.edu/catalog/2002449.

APA, 6th edition

Lewis, Meriwether, 1774-1809. (["Box 1 | Folder 9"])(1804)[Evans's Map 6 (the Expedition's route about October 22-November 1, 1804)]. https://collections.library.yale.edu/catalog/2002449.