My "History of Baseball Cards" update. What's next?

[darkhorse9]

A few weeks back I posted my project to assemble a type collection displaying the history and vagaries if baseball cards prior to World War 1.
I asked for, and got, some great ideas for new additions. I've added four new cards and I'm looking for more suggestions. I want cards that tell something interesting about the hobby.

Here are the four new additions and why

1888 Scrapps Tobacco - now that we know these are actually H.D. Smith, they were the first cards issued with gum

1893 Talk Of The Diamond - shows the high interest in baseball as well as the humor of the times

1912 C46 - among the first international baseball cards showing the growth of the sport

1918 Zeenut - the only cards issued during the height of World War 1

What should I add next? I want interesting stories behind the cards.