Cite

Lewis free soil map of the United States and Mexico including Oregon, Texas and the Californias.

MLA

Lewis Free Soil Map of the United States and Mexico Including Oregon, Texas and the Californias. John] Lewis, 0AD. https://collections.library.yale.edu/catalog/15603714.

APA, 6th edition

Lewis free soil map of the United States and Mexico including Oregon, Texas and the Californias. (0 C.E.). [Maps]. John] Lewis, https://collections.library.yale.edu/catalog/15603714.