Colwell, S. (1852). New themes for the Protestant clergy: Creeds without charity, theoloy without humanity, Protestantism without Christianity, with notes on the literature of charity, population, pauperism, political economy, and Protestantism (2nd rev. ed.). Philadelphia: Lippincott, Grambo.

Colwell, Stephen. New Themes for the Protestant Clergy: Creeds Without Charity, Theoloy Without Humanity, Protestantism Without Christianity, With Notes On the Literature of Charity, Population, Pauperism, Political Economy, and Protestantism. 2nd rev. ed. Philadelphia: Lippincott, Grambo, 1852.

Colwell, Stephen. New Themes for the Protestant Clergy: Creeds Without Charity, Theoloy Without Humanity, Protestantism Without Christianity, With Notes On the Literature of Charity, Population, Pauperism, Political Economy, and Protestantism. 2nd rev. ed. Philadelphia: Lippincott, Grambo, 1852.