Posted By:
Scott MosleyFrom the limited amount of information I could find out about Montague & Co. they seemed to have one "plant" but several retail stores at various addresses around the Philadelphia area during the period.
I don't think that it is unreasonable that Montague & Co. would sell a competitors product at their retail stores (such as Crofts Cocoa) especially if they didn't make a competing Cocoa product.
And it wouldn't surprise me if the cards were made available from the various retail stores where you could stop by and get a cup of hot Crofts Cocoa straight from their fountain as the back of the cards state.
Just my theory... nothing to prove it (yet) 