on 10 October 2006. Retrieved 9 March 2010. Archived from the original on 2014-07-04. Retrieved 2013-06-02. 2. ↑ "2020 U.S. Gazetteer Files". United States County seat: Upper Marlboro Bowie College Park Cumberland Frederick Cities Gaithersburg Greenbelt Hagerstown Havre de Grace Laurel Rockville Salisbury Takoma Park Barnesville Brookeville Chevy Chase Oakmont Ashton-Sandy Spring Aspen Hill Baltimore Highlands Bowleys Quarters Carney Catonsville Chillum Clinton Cockeysville-Hunt Valley Colesville Columbia Crofton Dundalk Edgewood Eldersburg Elkridge Ellicott City Flood Recovery". www.howardcountymd.gov. 2. ↑ Giovanna Cassese (2013). Accademie: Patrimoni di Belle Arti (in Italian). 2012-11-22. Retrieved 2012-09-23.