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