[jobermeyer2]

I'm reviewing a baseball (not baseball card...) related book for a journal, and in discussing the business of baseball the author includes a brief discussion of baseball cards. He writes that the "earliest" baseball cards were produced by Black Jack Gum in the 1870s.

Now, I've been collecting since the 80s, and I've never heard of anything by Black Jack Gum, certainly not from that early period. Is anyone aware of any baseball related issues by Black Jack, either "sets" or one-off products? I want to make sure I do my due diligence before including something in my review (there are other card related errors as well).

Thanks,

Jeff