Nasmyth's steam hammer, artwork NYS trainee working inside the nose cone of a PBY Catalina Navy plane NYA employees receiving training in the Assembly and Repair Department at Naval Base Oil refining process James Clerk Maxwell, Scottish Physicist Bridge In Monet's Garden, 1895-96 Saltash Bridge, c. 1930 Ge Electric Light Bulb TVA's Wheeler Dam Construction, Tennessee Hoover Dam George Washington Bridge Approach Illustration of geometric shapes First Diesel Engine Bridge over canyon in Arizona Testing The Life Of Light Bulbs Rifle Carrier for Motorcycle Early Morning at Coniston Assortment Of Transistors, 1961 Pont du Gard Electrically Heated Ice Cream Scoop The ferris wheel at the World's Columbian Exposition of 1893 in Chicago Overview of Busch Stadium, St. Louis, Missouri Frank Stanton and Prince of Princeton IBM Electric Typewriter Abstract Motorcycle Wheel Part of a tank Mustang at Warton Aircraft production, Boeing 737 passenger aircraft Suspension Bridge, Waco, Texas Williamsburg Bridge, view from Brooklyn Camera Patent Buff Electric Tattooing Device, Charles Wagner, 1904 50 Kilowatt Broadcasting Modulator Dike Site for Floods of The Netherlands Salmon Leap Weir, Athlone, County Roscommon, Ireland Type Writing Machine, Patented 1899 Wristwatch Patent Blue Brooklyn Bridge in Fog Pylons in a rural landscape at dusk The Titanic's propellers in the Thompson Graving Dock of Harland The Titanic's propellers in the Thompson Graving Dock of Harland Polaroid Camera Accessory Spooled steel cable iPod Patent Blue Construction of San Francisco Bay Bridge Bridge across a bay at sunset Chesapeake Bay Bridge Chesapeake Bay Maryland Crank It Up oil pipeline Page 1 Page 2 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 Page 11 Page 12 Page 13 Page 14