Baird, Robert. The Christian Retrospect and Register: A Summary of the Scientific, Moral and Religious Progress of the First Half of the XIXth Century. New York: M. W. Dodd, 1851. 420 p.
Baird, Robert. Religion in America; or, An Account of the Origin, Progress, Relation to the State, and Present Condition of the Evangelical Churches in the United States. with Notices of the Unevangelical Denominations. New-York: Harper & Brothers, 1845. 343 p.