"Fort Vancouver claim formerly James Douglas." Manuscript map
MLA
Stenzel, Franz (1906-1998). "Fort Vancouver claim formerly James Douglas." Manuscript map. Box 54, folder 1058. n.d.. https://collections.library.yale.edu/catalog/17232938.
APA, 6th edition
Stenzel, Franz (1906-1998). (["Box 54, folder 1058"])(n.d.)["Fort Vancouver claim formerly James Douglas." Manuscript map]. https://collections.library.yale.edu/catalog/17232938.