THOMAS CURTIS CLARKE JOHN BOGART M. N. FORNEY E. P. ALEXANDER H. G. PROUT HORACE PORTER THEODORE VOORHEES BENJAMIN NORTON ARTHUR T. HADLEY THOMAS L. JAMES CHARLES FRANCIS ADAMS B. B. ADAMS, JR. Roman Tramways of Stone--First Use of Iron Rails--The Modern Railway created by Stephenson's "Rocket" in 1830--Early American Locomotives--Key to the Evolution of the American Railway--Invention of the Swivelling Truck, Equalizing Beams, and the Switchback--Locating a Road--Work of the Surveying Party--Making the Road-bed--How Tunnels are Avoided--More than Three Thousand Bridges in the United States--Old Wooden Structures--The Howe Truss--The Use of Iron--Viaducts…
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