Federal Sites

• National Geodetic Survey
• U.S. Coast Guard Navigation Center
• U.S. Naval Observatory - Timing Applications
• U.S. Department of Transportation

               State Sites

• Vermont Mapping Program (Orthophotography)
• Vermont Center for Geographic Information

             Regional Sites

• Link to regional sites

               Other Sites

• American Congress on Surveying and Mapping
• American Association for Geodetic Surveying
• Institute of Navigation
• Vermont Society of Land Surveyors

• American Surveyor Magazine
• Point of Beginning (POB) Magazine
• Professional Surveyor Magazine
• GPS World Magazine

             International Sites

• Geodetic Survey Canada