[Starrucca viaduct, Starrucca, Pennsylvania]
29865C U.S. Copyright Office. Public domain photograph - historical image of Pennsylvania, United States, free to use, no copyright restrictions image - Picryl description
Ore train and Dry Fork Bridge, Bingham, Utah
Train on curved trestle. J196152 U.S. Copyright Office This record contains unverified data from caption card. Caption card tracings: Geogr.; RR Bridges; Mines... RR.
Michigan Central & Grand Trunk
Photoprint copyrighted by Underhill. This record contains unverified, old data from caption card. Caption card tracings: Ph. Ind.; Railroad bridges; Geogr.
Kentucky River High Bridge, Cincinnati Southern R.R.
View of bridge and river with floating lumber(?). H13969 U.S. Copyright Office.
[Train on the] highest single piling trestle in the world
J183812 U.S. Copyright Office This record contains unverified data from caption card. Caption card tracings: RR Bridges.
Suspension bridge over Niagra Falls, N.Y.
Photo by Pierson, Denver Colorado. This record contains unverified, old data from caption card. Caption card tracings: Shelf; NY; Bridges-NY; Bridges, Susp.