Mary Caffrey Low is one of the five founding members of the Sigma Kappa sorority.
Colby College, in Waterville, Maine, became the first New England college to admit women along with men. Low became the first female student at Colby, and for two years remained the only one. Eventually she was joined by four other women, and along with Elizabeth Gorham Hoag, Ida Fuller, Frances Mann and Louise Helen Coburn, Low created Sigma Kappa sorority at Colby on November 9, 1874.