Massachusetts. Metropolitan Water Board, and John L. Hildreth. Wachusett Dam, cofferdam above main dam site, from the west on top of west bank, Clinton, Mass., Dec. 18, 1897. December 18, 1897. Web. 24 May 2022. <https://ark.digitalcommonwealth.org/ark:/50959/d217qv81m>.

Massachusetts. Metropolitan Water Board, & John L. Hildreth. (December 18, 1897). Wachusett Dam, cofferdam above main dam site, from the west on top of west bank, Clinton, Mass., Dec. 18, 1897 [Photograph]. Retrieved from https://ark.digitalcommonwealth.org/ark:/50959/d217qv81m

Massachusetts. Metropolitan Water Board, and John L. Hildreth. "Wachusett Dam, cofferdam above main dam site, from the west on top of west bank, Clinton, Mass., Dec. 18, 1897." Photograph. December 18, 1897. Digital Commonwealth, https://ark.digitalcommonwealth.org/ark:/50959/d217qv81m (accessed May 24, 2022).