Colton's map of the United States of America, the British provinces, Mexico and the West Indies : showing the country from the Atlantic to the Pacific Ocean.
MLA
G. W., et al. Colton's Map of the United States of America, the British Provinces, Mexico and the West Indies : Showing the Country from the Atlantic to the Pacific Ocean. G.W. and C.B. Colton & Co., 1869. https://collections.library.yale.edu/catalog/15536525.
APA, 6th edition
G. W., Colton, C. B., & C. (1869). Colton's map of the United States of America, the British provinces, Mexico and the West Indies : showing the country from the Atlantic to the Pacific Ocean. [Maps]. G.W. and C.B. Colton & Co., https://collections.library.yale.edu/catalog/15536525.