MLA

Map, Sanborn, and issuing body Publishing Co. Hartford, Connecticut. 1885. https://collections.library.yale.edu/catalog/11196661.

APA, 6th edition

Map, S., & Publishing Co., issuing body. (1885). Hartford, Connecticut. [Atlases, Cadastral maps, Connecticut, Fire insurance maps, Hartford, local]. https://collections.library.yale.edu/catalog/11196661.