MLA

Lucius R. Hazen (Germany). Middle Building, Connecticut Hospital for the Insane. Middletown, Connecticut. box 1, folder 7. circa 1900-1906. https://collections.library.yale.edu/catalog/15789333.

APA, 6th edition

Lucius R. Hazen (Germany). (["box 1, folder 7"])(circa 1900-1906)[Middle Building, Connecticut Hospital for the Insane. Middletown, Connecticut]. https://collections.library.yale.edu/catalog/15789333.