MLA

Sanborn-Perris Map Co., issuing body. Danbury, Fairfield Co., Connecticut. 1897. https://collections.library.yale.edu/catalog/11090573.

APA, 6th edition

Sanborn-Perris Map Co., issuing body. (1897). Danbury, Fairfield Co., Connecticut. [Atlases, Cadastral maps, Connecticut, Danbury, Fire insurance maps, local]. https://collections.library.yale.edu/catalog/11090573.