1. How many different players were pictured on the cards? This includes the 1972 All-Time Greats Set and the 1991-92 All-Star sets.
2. Of the players included, what percentage of the players only appeared on one card?
3. Which Hall of Famers appeared least often (twice) - excluding the All-Star sets and the All Tine Greats set? I counted at least six players who match this.
4. Which likely future Hall of Famers appeared only once - again excluding the All-Star sets and the All Tine Greats set?