- Libro electrónicoHistory of the Negro Race in America From 1619 to 1880. Vol 1 Negroes as Slaves, as Soldiers, and as CitizensGeorge Washington Williams
- Libro electrónicoHistory of the Negro Race in America from 1619 to 1880. Vol. 2George Washington Williams
- Libro electrónicoHistory of the Negro Race in America from 1619 to 1880. Vol. 2 Negroes as Slaves, as Soldiers, and as CitizensGeorge Washington Williams