According to Betsy, Brent did the stickers. I think she posted it here, it's possible it was a personal conversation.
Looks like Brent said so as well, though not sure what John was referencing.
https://www.net54baseball.com/showpo...2&postcount=34
Maybe Baker started doing them at some point, but it was Brent in the first years of the program.
With everything else going on at PWCC, it doesn't take a rocket scientist to deduce the sticker program was probably not entirely clean either.