I ran across this advertisement for “The Largest Show Ever Held in New York” in the December 1981 issue of Trader Speaks.
Mickey Mantle and Duke Snider were probably decent draws to a show offering free admission! And they appeared on both days of the show.
I’m curious about which items made up the display of the hobby’s ten most valuable cards. If you know, drop a comment. By the way, many collectors used to order from Gelman’s catalogs. Unfortunately, I don’t have any of them in the Hobby Library to share yet.