I'm sure there are lots more than I have, but perhaps it's one of those genres that just got used and thrown with greater regularity, because the people who bought them were also buying, say, cigarettes.
Topps Gum
TenderMint
Old Nick
Old Nick / Bit-O-Honey
Clove Gum
Reed's Butterscotch
Reed's Paloop
Beech-Nut Gum
Garrott's Chocolate
Welch's Fudge
Wrigley's Spearmint
Baby Ruth
Doublemint
Wrigley's Spearmint Again
Juicy Fruit
Creamsicle
Horne's Candy Shop
Wrigley's
Grant Bar
Tenderrmint
Jests
Jolly Jack
Old Nick again
