Stone, Carpenter & Willson was a Providence, Rhode Island based architectural firm in the late 19th and early 20th Centuries. It was named for the partners Alfred Stone (1834–1908), Charles E. Carpenter (1845–1923). and Edmund R. Willson (1856–1906). The firm was one of the state's most prominent.

Petersham is a town in Worcester County, Massachusetts, United States. The population was 1,194 at the 2020 census. Petersham is home to a considerable amount of conservation land, including the Quabbin Reservation, Harvard Forest, the Swift River Reservation, and Federated Women's Club State Forest.