1. United States Government
317 E Diamond Ave, Gaithersburg, MD 20877
Coordinate: 39.14187,-77.19088
Phone: (301) 977-4618
2. Congress
9801 Washingtonian Blvd, Gaithersburg, MD 20878
Coordinate: 39.11477,-77.19673
Phone: (301) 926-0300
3. National Institute of Standards & Tech
100 Bureau Dr, Gaithersburg, MD 20899
Coordinate: 39.14175,-77.21791
Phone: (301) 975-6324