I collect a lot of caramels. These are my go-to spots along with Old Cardboard. Tons of info. Probably my favorite cards to collect over the past couple of years. I wish there were more photos (or any) of packs on a store counter, unopened packs, advertising etc. Seems to be a lot of tobacco, but to your question...doesn't seem to be a lot to have a good history or timeline. Great Post!!!
https://prewarcards.com/pre-war-card...e-cards-candy/
http://www.caramel-cards.com/cards.html