Correspondence, pay vouchers, orders, muster rolls, enlistment and discharge papers, receipts, contracts, affidavits, tax records, miscellaneous military documents, and printed matter documenting African Americans in military service. The bulk of the collection concerns the Civil War service of the U.S. Corps d'Afrique (organized in 1863 and renamed U.S. Colored Troops in 1864). Documents from the American Revolution consist chiefly of pay vouchers of Connecticut African Americans serving in the U.S. Continental Army. Also includes documents pertaining to slavery and printed matter such as nineteenth century speeches and writings on slavery, government orders, broadsides, and twentieth-century booklets and journal articles.