Dorothea Dix was the most politically engaged woman of her generation, which was itself a remarkable tapestry of activists. An influential lobbyist as well as a paragon of the doctrine of female benevolence, she vividly illustrated the complexities of the "separate spheres" of politics and femininity. Her greatest legislative initiative, a campaign for federal land grants to endow state mental hospitals, assumed a central role in the public land controversies that intertwined with the slavery issues in Congress following the Mexican War. The passage of this legislation in 1854, and its...