I just published my first post as part of the SABR Baseball Cards Committee. It looks at the "prehistory" of Topps Record Breaker cards, going all the way back to 1912.
Feel free to have a look, and let me know if there are important ones I missed. (But holy smokes, if y'all send me as many additions as you did for my Traded Cards article, I'm gonna be a busy man!)
https://sabrbaseballcards.blog/2019/...cord-breakers/