Mary Esther Trueblood Paine (May 6, 1872 – November 19, 1939) was an American mathematician and sociologist who taught mathematics at Mount Holyoke College and the University of California, Berkeley.
[2] She did her undergraduate studies at Earlham College in Richmond,[1] graduating with a bachelor's degree in 1893,[3] and became a mathematics and Latin teacher there.
Her research found that domestic servants were much less happy than workers in factories, restaurants, and shops, in part because of their long working hours and inability to control their free time.
[2][4] After this she studied for a year with Felix Klein at the University of Göttingen,[1] in 1900–1901, as a fellow of the Association of Collegiate Alumnae.
[6] There, she taught officers in training during World War I, and later "engineers from the airlines, the telephone company, and other fields, lawyers who wanted to keep their minds limber on calculus, insurance actuaries, chemists from the oil companies, sound experts, opticians, and many others".