9. David Christy, A Lecture on the Present Relations of Free Labor to Slave Labor, in Tropical and Semi-Tropical Countries: An Outline of the Commercial Failure of West Indian Emancipation, and Its Effects upon Slavery and the Slave Trade, Together with Its Final Effect upon Colonization to Africa. Addressed to the Constitutional Convention of the State of Ohio, 1850 (Cincinnati, OH: J. A. & U. P. James, 1850). (72 p.)


Lecture as described by the title. The monograph contains economic data comparing countries with free labor to countries with slave labor.