The B&M's 4 and 3/4 mile Hoosac tunnel where professor Mowbray first experimented with tri-nitro glycerin. Over 100 men died in it's construction.1800's postcard.
Unknown photographer June 6, 1890.Added to the photo archive by Stephen G. Myers, October 24, 2003.Railroad: Boston & Maine.
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The NERAIL New England Railroad Photo Archive
The NERAIL New England Railroad Photo Archive
