. "A second letter to the Rev. William E. Channing on the subject of Unitarianism"@en . "A second letter to the Rev. William E. Channing on the subject of Unitarianism" . . . "On the subject of Unitarianism" . . . . "Controversial literature"@en . "Controversial literature" . . "Second letter to Rev. William E. Channing on the subject of Unitarianism" . "Second letter to Rev. William E. Channing on the subject of Unitarianism"@en . . . . "A second letter to the Rev. William E. Channing : on the subject of Unitarianism" . . . . . . . . . . "Thacher's tracts" . . . . "History" . . . . . . . . "A second letter to the Rev. William E. Channing, on the subject of Unitarianism" . "A second letter to the Rev. William E. Channing, on the subject of Unitarianism"@en . . . "A second letter to the Rev. William E[llery] Channing, on the subject of unitarianism" . . . . . . . .