This volume collects nearly three hundred of Florence Kelley's letters, written over the course of more than six decades and embracing such topics as improved working conditions for women and children, intense engagement in electoral politics, struggles against manufacturing interests, and the machinations of a conservative Supreme Court. Rendered in Kelley's vivid, often combative prose, these letters also provide an intimate view into the personal life of a dedicated reformer who balanced her career with her responsibilities as a single mother of three children.