MLA

Sanborn-Perris Map Co., issuing body. Insurance Maps of South Norwalk, Fairfield Co., Connecticut. 1895. https://collections.library.yale.edu/catalog/11623291.

APA, 6th edition

Sanborn-Perris Map Co., issuing body. (1895). Insurance maps of South Norwalk, Fairfield Co., Connecticut. [Atlases--Connecticut--Norwalk--South Norwalk--1895, Cadastral maps--Connecticut--Norwalk--South Norwalk--1895, Fire insurance maps--Connecticut--Norwalk--South Norwalk--1895]. https://collections.library.yale.edu/catalog/11623291.