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The development of the zipper was oddly arduous, with many fastener versions tried out before the zipper we know today and have on our clothes, handbags, and luggage was finally figured out. Research: Friedel, Robert. “Zipper: an Exploration in Novelty.” W.W. Norton. 1994. Britannica, The Editors of Encyclopaedia. "zipper". Encyclopedia Britannica, 21 Apr. 2020, https://www.britannica.com/art/zipper Johnson, Ian. “Zipper anniversary: 10 bits of trivia to impress the pants off you.” CBC News. April 29, 2013. https://www.cbc.ca/news/science/zipper-anniversary-10-bits-of-trivia-to-impress-the-pants-off-you-1.1305202 Lewis, Danny. “One Japanese Company Makes Half of the World’s Zippers.” Smithsonian. Sept 3, 2015. https://www.smithsonianmag.com/smart-news/one-japanese-company-makes-half-worlds-zippers-180956482/ “Gideon Sundback.” National Inventors Hall of Fame. https://www.invent.org/inductees/gideon-sundback Bauman, Richard. “The Ups and Downs of Success.” Fremont Tribune. Nov. 20, 2006. https://www.newspapers.com/image/550483507/?terms=whitcomb%20judson&match=1 “Gideon Sundback celebrated in a Google doodle.” The Guardian. April 23, 2012. https://www.theguardian.com/technology/2012/apr/24/gideon-sundback-celebrated-google-doodle “Whitcomb Judson.” Lemelson MIT. https://lemelson.mit.edu/resources/whitcomb-judson “Zipper’s Evolution Slow, Shaky.” Spokane Chronicle. March 16, 1978. https://www.newspapers.com/image/578438126/ Altrowitz, Abe. “The Zipper was ‘Born’ and Raised Here.” The Minneapolis Star. June 12, 1973. https://www.newspapers.com/image/190250601/?terms=whitcomb%20judson&match=1 See omnystudio.com/listener for privacy information.