Cite

A Map of the United States. Projected by Nancy Gibbs, Livermore, 1828.

MLA

A Map of the United States. Projected by Nancy Gibbs, Livermore, 1828. 1828. https://collections.library.yale.edu/catalog/15826722.

APA, 6th edition

A Map of the United States. Projected by Nancy Gibbs, Livermore, 1828. (1828). [Manuscript maps]. https://collections.library.yale.edu/catalog/15826722.