The 1950 Callahan Hall of Fame baseball set feature drawing of Hall of Fame figures from artist Mario DeMarco distributed by the National Baseball Hall of Fame and at ballparks throughout the league. Produced between 1950 and 1956, these 1-3/4" by 2-1/2" cards featured Hall of Fame inductees of the era and added additional members subsequent to yearly inductions. The unnumbered cards reveal black-and-white renderings of each player and carry a detailed biography on the back. When the B.E. Callahan of Chicago Company, printers of "Who's Who in Baseball", ceased production in 1956, the set numbered 58 and feature dozens of Hall of Famers and stars such as: J. Frank "Home Run" Baker, Albert B. Chandler, Ty Cobb, Dizzy Dean, Joe DiMaggio, Lou Gehrig, Ted Lyons, Babe Ruth, Al Simmons and Paul Waner,, among others, as well as multiple views of the National Baseball Hall of Fame.