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Robert G. Harper. Argument against the Policy of Reopening the African Slave Trade. Atlanta, Ga., 1858.

Samuel Hazard, editor. The Register of Pennsylvania. 16 vols. Philadelphia, 1828–36.

Hinton R. Helper. The Impending Crisis of the South: How to Meet it. Enlarged edition. New York, 1860.

Lewis and Sir Edward Hertslet, compilers. A Complete Collection of the Treaties and Conventions, and Reciprocal Regulations, at present subsisting between Great Britain and Foreign Powers, and of the Laws, Decrees, and Orders in Council, concerning the same; so far as they relate to Commerce and Navigation, ... the Slave Trade, etc. 17 vols., (Vol. XVI., Index.) London, 1840–90.

William B. Hodgson. The Foulahs of Central Africa, and the African Slave Trade. [New York, (?)] 1843.