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Hoosac Tunnel Photographs
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Topographical plan of the vicinity of the west end of the Hoosac Tunnel 1864
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Topographical plan of the vicinity of the west end of the Hoosac Tunnel 1864
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Topographical plan from west shaft to west end of Hoosac Tunnel 1864
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Topographical plan east end of Hoosac Tunnel 1864
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Topographical plan east end of Hoosac Tunnel 1864
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Topographical plan east end of Hoosac Tunnel 1864
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Topographical plan east end of Hoosac Tunnel 1864
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Various apparatus for alignment used in or near the central shaft
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Hoosac Tunnel--central shaft, elevations of the four pumps of system c
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Hoosac Tunnel--central shaft, driving gear of 7 in. pump, system c
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Hoosac Tunnel--central shaft, details of pit work, pumping system b
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Hoosac Tunnel--central shaft details of 11 in. pump, system b
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Hoosac Tunnel--central shaft, elevation of pump gearing of system b
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Hoosac Tunnel--central shaft, plan of pump gearing, system b
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Hoosac Tunnel--central shaft, drawing lift pump
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Hoosac Tunnel--central shaft, shaft house and machinery
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Hoosac Tunnel--central shaft, ground plans of buildings and machinery
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Hoosac Tunnel--bench carriages, workings from central shaft
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Hoosac Tunnel--bench carriages, west end workings
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Hoosac Tunnel--plans of the timbering
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