Johnstown, Maryland
Johnstown is an unincorporated community in Calvert County, Maryland, United States.[1] Preston-on-the-Patuxent was listed on the National Register of Historic Places in 1974.[2]
References
- ↑ "Geographic Names Information System". Johnstown (Populated Place). U.S. Geological Survey. 2009-01-29.
- ↑ National Park Service (2008-04-15). "National Register Information System". National Register of Historic Places. National Park Service.
Municipalities and communities of Calvert County, Maryland, United States | ||
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| Towns |  | |
| CDPs | ||
| Other communities | ||
| Ghost town | ||
Coordinates: 38°19′44″N 76°27′49″W / 38.32889°N 76.46361°W
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