Historical clue formulations

• Early chewing gum ingredient — 2022-06-23
• Gum ingredient — 2018-05-13
• Chewing gum ingredient — 2012-12-09
• Raw material for Wrigley's, once — 2009-03-25
• Chewing gum ingredient — 2004-04-04
• Chewing gum base — 2002-05-19
• Chewing gum base — 1996-03-01