Cite

A diagram of Oregon.

MLA

General, United States. Surveyor. A Diagram of Oregon. Surveyor General's Office, 1860. https://collections.library.yale.edu/catalog/15821571.

APA, 6th edition

General, U. S. S. (1860). A diagram of Oregon. [Maps]. Surveyor General's Office, https://collections.library.yale.edu/catalog/15821571.