Mary Gabriel is the author of Ninth Street Women: Lee Krasner, Elaine de Kooning, Grace Hartigan, Joan Mitchell, and Helen Frankenthaler: Five Painters and the Movement That Changed Modern Art; Love and Capital: Karl and Jenny Marx and the Birth of a Revolution, which was a finalist for the Pulitzer Prize, the National Book Award, and the National Book Critics Circle Award; Notorious Victoria: The Life of Victoria Woodhull, Uncensored; and The Art of Acquiring: A Portrait of Etta and Claribel Cone. She worked in Washington and London as a Reuters editor for nearly two decades and lives in Ireland.