Hi Steve, the 1949 set is easy because of the major design change (adding the "AN EXHIBIT CARD"), the other years would be far more difficult to break down and checklist because you will need to measure the width of the "MADE IN USA", or note the change when they changed it to "Made In USA" and "Printed in USA", or when the year had only B&W cards (ie 1952) etc., and even then some styles overlapped years.
some that could be done...
1939-41 set (16 cards) Averill, Gehrig, Gomez, Hartnett, Klein, Kreevich, Cordially Lombardi, Mulcahy, Very Best Wishes Newson (sic), Rizzo, Russell, and the "#9" Williams, plus 4 others Ive not looked for but will have the "MADE IN USA" of 3/4"
The 1954-56 set would be fairly easy too because All except one, the Pee Wee Reese, had the player's name set in a distinctive typescript at bottom of card (30), plus 2 cards (Rizzuto and Doby) with the "AN EXHIBIT CARD" note scratched off in bottom corner
ie.
1954-56 Exhibit Supply Co.