MLA

Company, Sanborn Map. Chester, Middlesex-County, Connecticut, Issuing Body. 1903. https://collections.library.yale.edu/catalog/11085904.

APA, 6th edition

Company, S. M. (1903). Chester, Middlesex-County, Connecticut, issuing body. [Atlases, Cadastral maps, Chester (Town), Connecticut, Fire insurance maps, local]. https://collections.library.yale.edu/catalog/11085904.