Documents from the National Negro Business League, an organization founded by Booker T. Washington in 1900.

A collection of primary sources from 1790 the present.

Essays, letters and other papers from over 1100 African American authors that document historic events and contemporary culture.

Primary sources from the Atlantic slave trade (books, pamphlets, articles, manuscripts, and more).

Legal materials on slavery in the United States and the English-speaking world: every statute passed by every colony and state on slavery; every federal statute dealing with slavery; and all reported state and federal cases on slavery.