Divisions Nettie Florence Keller (née Armstrong; 18 March 1875 – 15 January 1974) was an American doctor, social reformer, feminist, prohibitionist and early vegan.

[2] She later studied medicine at the American Medical Missionary College in Battle Creek, Michigan, where she met Māui Pōmare and her future husband Peter Martin Keller.

When Seventh Day Adventist medical institutions in Australia became overstaffed, the General Conference asked the Kellers to make room for the older doctors by entering private practice.

[10] The Kellers returned to the United States permanently in late 1919[11] after about twenty years in New Zealand and worked at the College of Medical Evangelists in Los Angeles.

[3] One notable operation quite early in her career, in 1919, was an appendectomy performed on board a ship at sea in the Pacific.

[14] She commented that "I don't allow that anybody who touches animal products at all, even eggs, butter and milk, can claim to be a vegetarian.