Map of the state of New York with the latest improvements / by H. Phelps.
MLA
Phelps, Humphrey. Map of the State of New York with the Latest Improvements / by H. Phelps. Humphrey Phelps, 1832. https://collections.library.yale.edu/catalog/15753326.
APA, 6th edition
Phelps, H. (1832). Map of the state of New York with the latest improvements / by H. Phelps. [Maps]. Humphrey Phelps, https://collections.library.yale.edu/catalog/15753326.