This text traces the development of a distinctive Communist strain of American feminism from its troubled beginnings in the 1930s, through its rapid growth in the Congress of American Women during the early years of the Cold War, to its culmination in Communist Party circles of the late 1940s and early 1950s. The author argues that, despite the devastating effects of anti-Communism and Stalinism on the progressive Left of the 1950s, Communist feminists such as Susan B. Anthony II, Betty Millard, and Eleanor Flexner managed to sustain many important elements of their work into the 1960s, when a new generation took up their cause and built an effective movement for women's liberation. "Red Feminism" aims to provide a more complex view of the history of the modern women's movement, showing how key Communist activists came to understand gender, sexism and race as central components of culture, economics and politics in American society.