The United States & The Relative Position of the Oregon & Texas.
MLA
The United States & The Relative Position of the Oregon & Texas. James Wyld, 1845. https://collections.library.yale.edu/catalog/15536456.
APA, 6th edition
The United States & The Relative Position of the Oregon & Texas. (1845). [Maps]. James Wyld, https://collections.library.yale.edu/catalog/15536456.