Vintage Bub Bubble Gum Ad-Americas New Pastime! 1930's "Bubble Champs"! 5" x 5"! | eBay
File:A pack of chewing gum, Wrigley's, 1940s.JPG - Wikimedia Commons
Wrigley's Juicy Fruit Chewing Gum Store Display Cardboard Box Advertising 1930's | eBay
Wm. Wrigley Jr. Company, est. 1891 - Made-in-Chicago Museum
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