| Berry Engineering: Family-owned civil engineering and land surveying firm. Describes services and gives contact information. |
| Commonwealth Communities - Petersham Massachusetts: Information about Petersham from state agencies. |
| Earthlands: Educational organization and intentional ecological community. Calendar of events and information on facility. |
| EarthStory: Information on annual community gathering to reconnect with the planet. Photos of past events and registration information. |
| First Congregational Parish Unitarian: Contains information about the church, including history, event listings, pictures, and program schedules. |
| Harvard Forest: Includes a museum and nature trails, as well as serving as a base for research and education in forest biology. Includes descriptions of the forest, the research, and classes. Owned by Harvard University. |
| Monks of the Adoration Chapel Webcam: Updated every minute from Petersham, MA. |
| Petersham Center School: Elementary school. Contains a history and photographs. |
| Petersham Craft Center: Contains picture of the center along with lists of classes and events. |
| Raven Adventures Global Classroom: Adventure travel company and non-profit service organization dedicated to the preservation of the environment and cultures. Includes descriptions of trips, classes, and projects. |
| Sputtermill Ranch Llamas: Llama ranch offers sales of breeding stock, stud service, and llama gift items. Business description and contact information. |
| The Petersham Book Loft and Photography: Second-hand bookstore and photography shop. Includes a profile of the owner, postcards, and ordering information for the "Champions of Portugal" calendar. |
Classical
