Neat idea! I love those Exhibit cards:
ca. 1925 Babe Ruth-Rogers Hornsby-Mickey Walker-Georges Carpentier:
ca. 1925-31 PC Back Exhibit Gehrig 'silhouette' variation:
1928 Exhibit PCL Earl Averill:
1920s Exhibit freaks and oddities card of Zip the pinhead:
1931 Jim Thorpe:
My cousin on a 1928 Exhibit card:
1926 Exhibit Four Marks [sic] Brothers. This is the only Marx Brothers exhibit card I have ever seen. It is from a rare set of theatrical cards. The card mentions their stage work but not their films because they had not yet made a film. The Cocoanuts was their new play on Broadway and would not be filmed until after the silent film era ended.
Cheating a bit here, as it is not a card though it is encapsulated by SGC. Advertising header for the 1921 Exhibit boxing/wrestling issue:
Another 'cheat': a checklist card for the 1951 print run of baseball exhibits:
Finally, 1932 Olympics issue of Babe Didrikson, the greatest female athlete of all time:
