Town of Northumberland
- Official town website. Municipal departments, staff directory, board meeting minutes, and event calendar.
- http://www.northumberlandnh.org/

State of New Hampshire - Northumberland
- Part of the state's official site. Town's mailing address, population, county, and districts for election purposes. Includes related links.
- http://www.nh.gov/municipal/northumb.html

John Dee's Northwoods Cam Network - Groveton, NH
- Images updated every 30 minutes during daylight hours. Provided by Groveton Trailblazers Snowmobile Club.
- http://www.johndee.com/ncn/groveton_ncn.htm

Groveton Trailblazers
- Snowmobile club maintains trails in northeastern New Hampshire including Nash Stream State Park. Provides club news, membership information, trail map and conditions, links to other clubs and to local web cams.
- http://www.grovetontrailblazers.com/

Riverside Speedway
- 1/4 mile high-bank asphalt oval. Classes include late Models, Super Stocks, Street Stocks and Enduros. Provides schedules, results, photographs, sponsor links and for sale items.
- http://www.riversidespeedway.com/

Great North Woods :Groveton Government
- Municipal office phone numbers.
- http://www.greatnorthwoods.org/groveton/gov.htm