According to her obituary in The New York Times (8/31/12): The second of six children of Orthodox Jewish parents, Shulamith Feuerstein was born in Ottawa and reared in Kansas City and St. Louis. The family Americanized its name to Firestone when she was a child. Around 1967, she helped found the Westside Group, a Chicago feminist organization, before moving to New York, where she was a founder of three feminist organizations begun as alternatives to mainstream groups like the National Organization for Women. She published her first book, The Dialectic of Sex (1970) at age 25, only to withdraw from public life soon afterwards. For the rest of her life, she lived a quiet, largely solitary existence of painting and writing, though she published little beyond a fictionalized memoir, Airless Spaces (1998). She was the subject of two documentaries called "Shulie" made 30 years apart (1967 and 1997).