Region
Washington County
Pennsylvania
6
Virginia
6
Washington County (Va.)
6
Washington County (Pa.)
5
Maryland
2
Washington County (Md.)
2
Allegany County
1
Allegany County (Md.)
1
Chesapeake and Ohio Canal (Md. and Washington, D.C.)
1
New York (State)
1
Pleasant Hill Female Seminary
1
Rhode Island
1
United States
1
Washington County (N.Y.)
1
Washington County (R.I.)
1