Cite

Map of the mouth of the Connecticut River and Saybrook Harbour.

MLA

Map of the Mouth of the Connecticut River and Saybrook Harbour. Bureau of U.S. Topographical Engineers, 1838. https://collections.library.yale.edu/catalog/15675150.

APA, 6th edition

Map of the mouth of the Connecticut River and Saybrook Harbour. (1838). [Maps]. Bureau of U.S. Topographical Engineers, https://collections.library.yale.edu/catalog/15675150.