Original June 16, 1885 University of Pennsylvania School of Dental Medicine diploma awarded to L. Foster Jack (Louis Ottofy Foster Jack, 1851–1927), conferring the degree of Doctor in Chirurgia Dentaria (Doctor of Dental Surgery). Foster Jack would go on to become one of the most influential figures in American dentistry, serving as a prominent educator, editor, author, and authority on operative dentistry and dental pathology whose writings helped shape the profession during the late nineteenth and early twentieth centuries. The diploma bears the signatures of an extraordinary faculty roster, including Joseph Leidy (1823–1891), the legendary anatomist, paleontologist, and naturalist often regarded as one of the greatest American scientists of the nineteenth century; Thomas G. Wormley (1826–1897), pioneering toxicologist and forensic chemist whose work became foundational in medico-legal science; Harrison Allen (1841–1897), distinguished anatomist and physician; James Truman (1843–1914), influential dental educator and author; and Henry C. Darby, noted professor of operative dentistry and clinical instruction. Beautifully executed in Latin with elaborate engraved calligraphy, the diploma retains its original embossed University seal and blue ribbon and represents the convergence of several of the most important figures in nineteenth-century American medicine, science, and dentistry. Shelved at Rockville Room J (MW shelf). More