Biografier over opfindere med historisk betydning: Johannes Gutenberg, Leonardo da Vinci, Benjamin Franklin, James Watt, Joseph og Étienne Montgolfier, David Bushnell, Alessandro Volta, Robert Fulton, George Stephenson, Samuel F.B. Morse, John Ericsson, Isambard Kingdom Brunel, Richart Gatling, Alfred Nobel, Carl Benz, Ferdinand von Zeppelin, Thomas Alva Edison, Alexander Graham Bell, Henry Ford, Wilbur og Orville Wright, Robert H. Goddard, Igor Sikorskij, Robert Watson Watt, Alan Turing, Stephen Jobs, Bill Gates og Tim Bernes-Lee.