MLA

Map, Sanborn, and issuing body Publishing Co. Thompsonville, Connecticut. 1885. https://collections.library.yale.edu/catalog/11672626.

APA, 6th edition

Map, S., & Publishing Co., issuing body. (1885). Thompsonville, Connecticut. [Atlases--Connecticut--Thompsonville--1885, Cadastral maps--Connecticut--Thompsonville--1885, Fire insurance maps--Connecticut--Thompsonville--1885]. https://collections.library.yale.edu/catalog/11672626.