Posted By:
DGTJay.
I believe you are refering to the "Baseball Candy"
wrapper that is yellow and is what the panels of both red backs and blue backs were issued in, and they inserted CMAS, Team and MLAS cards between a pair of red back or blue back panel "game cards".
there is also a really rare rack pack with the board game and complete 52 card deck along with a few "player" cards (Connie Mack or Major League All-stars)
I'll post some pics as time/hosting allows.