Tappan Wentworth
Report of the Hoosac Tunnel and Troy and Greenfield Railroad, by the Joint Standing Committee of 1866.
Tappan Wentworth · 2012
ספרייה ציבורית, Project Gutenberg. בלי הרשמה.
Troy and Greenfield Railroad CompanyRailroad tunnels -- MassachusettsHoosac Tunnel (Mass.)