Scientific American, Vol. 25, No. 9 (August 1871)
An issue of the weekly American trade and invention paper Scientific American, published in New York in August 1871 for patent-holders, machinists and manufacturers. Wood-engraved cuts show steam engines and sectioned boilers, hands demonstrating small tools, and lettered geometric diagrams, giving designers crisp black-line machinery profiles, hatched cutaways and technical figures that sit well as spot art.
