Daniel Boone Bridge over east lagoon, Liberal Arts Building on left, Mines Building on right and Government Building in distance, Louisiana Puchase Exposition, 1904

Jefferson Bridge, and Palaces of Electricity and Education, World's Fair, St. Louis

View from Cape Horn, looking South, Mineral Bar Bridge 2,500 feet below.

Long ravine trestle and bridge, 113 feet high, 878 feet long, looking west.

Long ravine trestle and bridge - 878 feet long, 113 feet high looking east.

Turnpike bridge across the Kansas River, near Wyandotte, Kansas, 287 miles west of St. Louis, Mo.