American pianist and patron of music, especially of chamber music. She inherited a considerable amount of money from her parents and decided to spend it on promotion of chamber music, a mission she continued to carry out until her death at the age of 89 in Cambridge, Massachusetts. Due to her husband's profession, she also gave financial support to medical institutions. Coolidge established the Berkshire String Quartet in 1916 and started the Berkshire Music Festival at South Mountain, Pittsfield, Massachusetts, two years later. Out of this grew the Berkshire Symphonic Festival at Tanglewood, which she also supported. She was elected a Fellow of the American Academy of Arts and Sciences in 1951.
