Dr. Eliza Mosher, an 1875 graduate of the Medical School, was persuaded by President Angell to give up her private practice in 1896 to become the first Dean of Women. As Professor of Hygiene in the Literary department, she was also the University’s first female faculty member.
http://www.aadl.org/gallery/aastreets/site14a/mosher_300.gif.html
https://en.wikipedia.org/wiki/Eliza_Maria_Mosher