MLA

Sanborn Map Company, issuing body. Insurance Maps of Manchester and South Manchester, Hartford County, Connecticut. 1919. https://collections.library.yale.edu/catalog/11139073.

APA, 6th edition

Sanborn Map Company, issuing body. (1919). Insurance maps of Manchester and South Manchester, Hartford County, Connecticut. [Atlases, Cadastral maps, Connecticut, Fire insurance maps, local, Manchester, South Manchester]. https://collections.library.yale.edu/catalog/11139073.