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March 25, 2024 33 mins

Margaret E. Knight was an ingenious woman. She started tinkering with things when she was still just a tiny child, and the first invention that really improved the lives of those around her came about at the age of 12. 


  • “A Lady in a Machine Shop.” Woman’s Journal, December 21, 1872. Accessed online:$409i
  • Bedi, Joyce. “Margaret Knight.” Lemelson Center, Smithsonian. March 22, 2021.
  • Britannica, The Editors of Encyclopaedia. "Margaret E. Knight". Encyclopedia Britannica, 10 Feb. 2024,
  • “Gained Fame as Inventor.” The Boston Globe. Oct. 13, 1914.
  • “The Inspiring Story of Margaret E. Knight.” National Inventors Hall of Fame.
  • Knight, M.E. “Clasp.” U.S. Patent Office. Oct. 14, 1884.
  • Knight, Margaret E. “Bag Machine.” U.S. Patent Office. July 11, 1871.
  • Knight, M.E. “Improvement in Paper Bag Machine.” U.S. Patent Office. Oct. 28, 1879.
  • Knight, M.E. “Rotary Engine.” U.S. Patent Office. January 6, 1903.
  • Knight, M.E. “Skirt Protector.” U.S. Patent Office. Aug. 7, 1883.
  • Knight, Margaret E. “Sole Cutting Machine.” U.S Patent Office. Sept. 16, 1890.
  • “Margaret E. Knight, ‘Woman Edison,’ Dead.” The Sun. Oct. 15, 1914.
  • “Patent Model for Paper Bag Machine.” Smithsonian – National Museum of American History.
  • “Patented By Women.” Pittsburgh Dispatch. April 10, 1892.
  • PETROSKI, HENRY. “The Evolution of the Grocery Bag.” The American Scholar, vol. 72, no. 4, 2003, pp. 99–111. JSTOR,
  • Sisson, Mary, and Doris Simonis, ed. “Inventors and Inventions.” Marshall Cavendish. 2007.
  • Smith, Ryan P. “Meet the Female Inventor Behind Mass-Market Paper Bags.” Smithsonian. March 15, 2018.
  • “The Ames Manufacturing Company … “ Boston Evening Transcript. Oct. 17, 1873.
  • “Women As Inventors.” The Philadelphia Times. April 10, 1892.
  • “Women Who Are Inventors.” New York Times. October 19, 1913.

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