The 1991 Topps 40 Years of Baseball set commemorates four decades of baseball history. Released by Topps, one of the leading baseball card manufacturers, this set features a variety of players, moments, and milestones from the sport's rich history. Each card typically showcases a player or event along with a design that reflects the era being commemorated.
These sets often include subsets focusing on Hall of Famers, record-breakers, and memorable moments from each decade. They're popular among collectors for their nostalgic value and for celebrating the history of the game.