MLA

Sanborn-Perris Map Co., issuing body. Canaan, Litchfield Co., Conn. 1901. https://collections.library.yale.edu/catalog/11040290.

APA, 6th edition

Sanborn-Perris Map Co., issuing body. (1901). Canaan, Litchfield Co., Conn. [Atlases, Cadastral maps, Canaan, Connecticut, Fire insurance maps, local]. https://collections.library.yale.edu/catalog/11040290.