03-13-2015, 07:24 PM
Dorin, Patrick C. An Illustrated Guide to American Freight Train Equipment. Hudson, Wisconsin: Enthusiast Books, 2013.
Isaacs, Aaron. Twin Ports by Trolley: The streetcar era in Duluth-Superior. Minneapolis: University of Minnesota Press, 2014
Norfolk Southern. Norfolk Southern Seasons. Norfolk, Virginia: Norfolk Southern Corp., 2014.
Isaacs, Aaron. Twin Ports by Trolley: The streetcar era in Duluth-Superior. Minneapolis: University of Minnesota Press, 2014
Norfolk Southern. Norfolk Southern Seasons. Norfolk, Virginia: Norfolk Southern Corp., 2014.