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

  1. ↑ "Geographic Names Information System". Johnstown (Populated Place). U.S. Geological Survey. 2009-01-29.
  2. ↑ National Park Service (2008-04-15). "National Register Information System". National Register of Historic Places. National Park Service.

Coordinates: 38°19′44″N 76°27′49″W / 38.32889°N 76.46361°W / 38.32889; -76.46361


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