MLA

Sanborn Map Company, issuing body. Insurance Maps of East Hartford, Hartford County, Connecticut. 1908. https://collections.library.yale.edu/catalog/11108702.

APA, 6th edition

Sanborn Map Company, issuing body. (1908). Insurance maps of East Hartford, Hartford County, Connecticut. [Atlases, Cadastral maps, Connecticut, East Hartford, Fire insurance maps, local]. https://collections.library.yale.edu/catalog/11108702.