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1. Central shaft buildings erected after fire in 1867.

2. Hoosac Tunnel. West shaft buildings

3. Hoosac Tunnel, its surroundings, workers, and machinery. Central shaft

4. Person standing on rim of central shaft to Hoosac Tunnel

5. West shaft buildings

6. 1 Profil du souterrain. 2 chandelier a cremalliere 3 profil du souterrain avec les ordonnes calculees 4 clou a tete percee 5...

7. All east portal

8. Arching at west end Hoosac Tunnel

9. Bird's eye view of tunnel, store, &c

10. Bird's-eye view of east portal

11. Bird's-eye view of east portal

12. Boring machine

13. Boston & Maine 2504

14. Central shaft at the time of fire, 1867, 583 feet deep

15. Design for arch/entrance of Hoosac Tunnel

16. Design for arches/entrance of Hoosac Tunnel

17. Diagram of excavation and construction. Hoosac Tunnel, on the Troy and Greenfield R.R.

18. Diagrams of excavation and construction. Hoosac Tunnel, on the Troy and Greenfield R.R.

19. A dining saloon on wheels

20. East end ; west end ; east end