(1831–1917), born in New Hampshire, graduated from Harvard (1855), and settled in Concord as a schoolteacher, where his pupils included the children of Emerson, Hawthorne, and the elder Henry James. He became an Abolitionist leader, and was arrested for refusing to testify concerning his aid to John Brown. He was associated with the Springfield Republican (1856–1914), and was also active in humanitarian work as the head of state charities. His acquaintance with the Transcendentalists resulted in the publication of many books, which include Henry D. Thoreau (1882); A. Bronson Alcott: His Life and Philosophy (2 vols., 1893), written with W.T. Harris, who also contributed to his Genius and Character of Emerson (1885); The Personality of Thoreau (1901); Hawthorne and His Friends (1908); and Recollections of Seventy Years (2 vols., 1909).
From The Oxford Companion to American Literature in Oxford Reference.