MLA

Sanborn Map Company, issuing body. Wallingford, New Haven County, Conn. 1904. https://collections.library.yale.edu/catalog/11675886.

APA, 6th edition

Sanborn Map Company, issuing body. (1904). Wallingford, New Haven County, Conn. [Atlases--Connecticut--Wallingford--1904, Cadastral maps--Connecticut--Wallingford--1904, Fire insurance maps--Connecticut--Wallingford--1904]. https://collections.library.yale.edu/catalog/11675886.