Stonehurst - Robert Treat Paine Historical Trust
- Non-profit organization provides financial support to the City of Waltham to help preserve Stonehurst, the Robert Treat Paine Estate.
- http://www.stonehurstwaltham.org/

Waltham Amateur Radio Association
- Includes membership information, events calendar and an online newsletter.
- http://www.wara64.org/

Boris' Kitchen
- Sketch comedy troupe based at Brandeis University. We write and perform original sketch comedy to the delight of audiences everywhere.
- http://people.brandeis.edu/~boriskitchen/

Waltham Partnership for Youth, Inc.
- Multi-sector collaborative, not-for-profit corporation whose mission is to enhance the quality of young lives in Waltham by identifying the needs of all Waltham youth and coordinating the resources to meet those needs. Primary focus areas are academic enh
- http://www.walthampartnershipforyouth.org/

Protestant Guild for Human Services
- Non-Profit human service agency dedicated to providing high quality human services to individuals with special needs. Includes contact information.
- http://www.protestantguild.org

Island Neighborhood Association
- Neighborhood organization for the Island/Forest Grove areas of Waltham and Newton, Massachusetts.
- http://www.islandneighborhood.org

Waltham Chess Club
- Meets weekly offering chess for players of any level. Also sponsors tournaments throughout the year.
- http://www.masschess.org/Hosted_Sites/WalthamCC/Info_WCC.htm

History of Prospect Hill Ski Area
- Includes personal recollections, maps and photographs of the now defunct Prospect Hill Ski Area.
- http://www.nelsap.org/ma/prospecthill.html

Gore Place
- Offers guided tours of an 1806 mansion. Contains historical details, program descriptions, a calendar of events, and information about renting the house.
- http://www.goreplace.org/

Waltham Historical Society
- Includes an event calendar, donation information, a list of officers, society news and volunteer information.
- http://walthamhistoricalsociety.org/