Cite

Phelps's ornamental map of the United States and Mexico.

MLA

Phelps's Ornamental Map of the United States and Mexico. Humphrey Phelps, 1846. https://collections.library.yale.edu/catalog/15536459.

APA, 6th edition

Phelps's ornamental map of the United States and Mexico. (1846). [Maps]. Humphrey Phelps, https://collections.library.yale.edu/catalog/15536459.