MLA

Sanborn Map Company, issuing body. Higganum, Middlesex Co., Conn. 1908. https://collections.library.yale.edu/catalog/11131301.

APA, 6th edition

Sanborn Map Company, issuing body. (1908). Higganum, Middlesex Co., Conn. [Atlases, Cadastral maps, Connecticut, Fire insurance maps, Higganum, local]. https://collections.library.yale.edu/catalog/11131301.