Cite

Colton's map of the state of Georgia.

MLA

G. W., et al. Colton's Map of the State of Georgia. G.W. & C.B. Colton, 1877. https://collections.library.yale.edu/catalog/15811362.

APA, 6th edition

G. W., Colton, C. B., & C. (1877). Colton's map of the state of Georgia. [Maps]. G.W. & C.B. Colton, https://collections.library.yale.edu/catalog/15811362.