This image is provided courtesy of the Yale University Library. The Yale University Policy on Open Access to Digital Representations of Works in the Public Domain from Museum, Library, and Archive Collections states: “The goal of digitization is to enhance access to the collections in Yale’s museums, archives, and libraries for students, faculty, and the world. To this end, Yale will make digital copies of unrestricted public domain collections available for use without limitations through the University’s electronic interfaces.” The copyright term for this image is assumed to be expired.