SCIENCE, INDUSTRY & BUSINESS LIBRARY / NEW YORK PUBLIC LIBRARY / SCIENCE PHOTO LIBRARY SCIENCE, INDUSTRY & BUSINESS LIBRARY / NEW YORK PUBLIC LIBRARY / SCIENCE PHOTO LIBRARY
Cowper's printing machine, historical artwork. This double-cylinder steam-powered printing press was an improvement on older block printers. The steam power greatly increased the rate at which printing could be done. Artwork taken from History of wonderful inventions, London, 1849.
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