. . . . . . "Letters to the Reverend William E. Channing, D.D., on the existence and agency of fallen spirits" . . "Controversial literature" . "Controversial literature"@en . . . . "Letters to the Rev. William E. Channing, D.D., on the existence and agency of fallen spirits"@en . "Letters to the Rev. William E. Channing, D.D., on the existence and agency of fallen spirits" . . . . . . . . .