Curated OER
National Park Service: The American Civil War: African Americans
An overview of African American's contributions during the Civil War. Presents the history, contributions, and information on the Underground Railroad.
US National Archives
Nara: Teaching With Documents: Black Soldiers in the Civil War
This comprehensive site from the National Archives and Records Administration (NARA) describes the history of the participation of colored troops in the Civil War and government efforts to research and compile records about them....
Other
Hart Island History: Ny State's Civil War "u.s. Colored Troops"
After a brief history of African-American regiments from New York, you can read about the United Stated Colored Troops in general, where they fought, how they were paid, and the number of casualties among the troops.