Contract No. 20, Coldbrook-Swift Tunnel, Barre, Hardwick, Greenwich, dam in east heading of Shaft 9, looking west at Sta. 839+69, arch forms in background, Quabbin Aqueduct, Barre, Mass., Jan. 2, 1934

Contract No. 20, Coldbrook-Swift Tunnel, Barre, Hardwick, Greenwich, dam in east heading of Shaft 9, looking west at Sta. 839+69, arch forms in background, Quabbin Aqueduct, Barre, Mass., Jan. 2, 1934

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