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WikiPedia: Slinky http://www.firstpr.com.au/slinky/ http://inventors.about.com/od/sstartinventions/a/s... http://www.google.com/patents?vid=2415012 http://www.kxmb.com/getArticle.asp?ArticleId=30088... http://www.poof-slinky.com/ http://time.com/4127170/slinky-70-years/ http://www.toy-tia.org/industry/news/press/tf03_ce... https://www.nytimes.com/2008/11/25/business/25jame... https://archive.org/details/warmans101greate0000un... https://archive.org/details/warmans101greate0000un...