Back then it was just first Major Release regardless of where they played. It's why Mariano Rivera, and other, are pictured in street clothes in 92 Bowman. It was in 2006 when MLB instituted a rule that they player must have appeared in a ML game before being allowed to have a Major Release RC. It's why Alex Gordon has cut up cards in that year's Topps set. Card companies were getting stupid with trying to get players onto a card as quickly as possible and, well, it was getting messy.
Tired and trembling
I am descending,
will I have to stay here
and live this life again?