MLA

August Schmelzer Company (Meriden, Connecticut). Gaylord Farm Sanitarium. Wallingford, Connecticut. box 1, folder 14. circa 1900-1906. https://collections.library.yale.edu/catalog/15789480.

APA, 6th edition

August Schmelzer Company (Meriden, Connecticut). (["box 1, folder 14"])(circa 1900-1906)[Gaylord Farm Sanitarium. Wallingford, Connecticut]. https://collections.library.yale.edu/catalog/15789480.