Letter to Charles K. Newcomb
p67“Dr C. was reading Michelet's Life of Luther, and that naturally brought up the Reformation often.”
Fuller, Margaret. The Letters of Margaret Fuller. Edited by Robert N. Hudspeth. Vol. II. Ithaca: Cornell University Press, 1984.
Fuller engaged directly with the book's content, offering analysis of Luther's theological individualism and its implications, as as Hudspeth identified.