In 1664, commissioners of the Plymouth and Massachusetts colonies—Robert Studson, Constant Southworth, Josias Winslow, Jos. Fisher, Roger Clapp, and Eleazer Lusher—began work on May 10 to run out and establish the boundary line between the colonies, marking a white oak tree that stood at this spot, 3 miles south of the southerlymost part of the Charles River, where the line changed direction. In 1790, by order of the government and the General Court, Lemuel Kollock, Esq., was appointed agent to have a stone erected here to preserve the location of the former station or angle tree. Selectmen of Wrentham and Attleborough were present, and the inscriptions recorded that from this stone the line ran east 20 and a half degrees north to Accord Pond on the Plymouth side and due west the extent of the Commonwealth on the Massachusetts side. The work was done at Wrentham on November 29, 1790, by Samuel Fisher and Samuel Fisher and Son.