Contract No. 66, Regulating Dams, Middle Branch (New Salem), and East Branch of the Swift River, Hardwick and Petersham (formerly Dana), looking southeasterly from a knoll on the east side of Pottapaug Pond, east branch regulating dam, Hardwick, Mass., Dec. 14, 1938

Contract No. 66, Regulating Dams, Middle Branch (New Salem), and East Branch of the Swift River, Hardwick and Petersham (formerly Dana), looking southeasterly from a knoll on the east side of Pottapaug Pond, east branch regulating dam, Hardwick, Mass., Dec. 14, 1938

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