More to explore:
The Irish and the Transcontinental Railroad
Worksheets: Transcontinental Railroad History
Completion of the First Transcontinental Railroad
Completion of the world's first transcontinental railroad was celebrated at Promontory Summit, Utah, where the Central Pacific and Union Pacific Railroads met on May 10, 1869.
New Hope Railroad
Railroad show at 1939 World's Fair.
Missouri Pacific Railroad Locomotive in Hermann, Missouri. Photograph, 1877. Missouri History Museum Photographs and Prints Collections. Transportation. N21969
PRR Steam Locomotive
Kinzua Bridge near Kane, Pennsylvania (1882) holding the record of tallest railroad bridge in the world at the time.
1927 Hudson locomotive -- New York Central Railroad.