PBS
Africans in America: Missouri Compromise
This PBS site offers information about the compromise that settled the question of whether slavery would be allowed in the vast area acquired from France in the Louisiana Purchase of 1803.
Siteseen
Siteseen: American Historama: Missouri Compromise
Provides interesting facts and important information about the 1820 Missouri Compromise, a settlement reached between the pro-slavery and anti-slavery factions on the extension of slavery into new territories.