Contract No. 20, Coldbrook-Swift Tunnel, Barre, Hardwick, Greenwich, general view of plant at Shaft 12, Quabbin Aqueduct, Hardwick, Mass., Dec. 7, 1933

Contract No. 20, Coldbrook-Swift Tunnel, Barre, Hardwick, Greenwich, general view of plant at Shaft 12, Quabbin Aqueduct, Hardwick, Mass., Dec. 7, 1933

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