| Title | United States in 1850 Episcopal Churches by County |
| Date | 1850 |
| Source | Abraham Lincoln Historical Digitization Project |
| Creator | Siczewicz, Peter |
| Type | Map |
| Permission | Abraham Lincoln Historical Digitization Project |
| Info | County boundary map courtesy of: HUSCO Boundary Files, 1790-1999. Eds. Carville and associates. Baton Rouge, LA: Geoscience Publications, 1999. © Copyright 1991,1996,1999 Carville Earle. |
| 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 . |