I have almost a complete set as well. I think these were made by Fleer. I used to buy packs of these just to get a Garlits card or two. In 1992, I took the Butch Leal card from this set ("California Flash" Duster) and had Butch sign it at the U.S. Nationals. He smiled from ear to ear when he saw the card, and asked if I had another one.
Should have traded him for a ride in his Pro Stocker.