American Iron Trade Manual – 1874
Typo, Eads Bridge 1874, still standing, crosses the Mississippi River at St. Louis Missouri – Bridge built by Andrew Carnegie’s Keystone Bridge Company.
Van Nostrand’s Eclectic Engineering Magazine Volume XXI – 1879
Midvale’s steel provided to Brooklyn Bridge 1883 construction, contracted through Keystone Bridge Company. Cables on Brooklyn Bridge, steel cable provided by Roebling Steel, owned by architect of bridge.