Historical, Demographic, Economic, and Social Data: The United States, 1790-1970 .
| Title | Free States, Slave States and Territories |
| Date | 1850 |
| Source | Abraham Lincoln Historical Digitization Project |
| Creator | Siczewicz, Peter |
| Type | Map |
| Permission | Abraham Lincoln Historical Digitization Project |
| More_Info | Census data provided by: Inter-university Consortium for Political and Social Research. Historical, Demographic, Economic, and Social Data: The United States, 1790-1970 . |
| Themes | || African-American Experience || Frontier Settlement |