Bob Feller endorsed a number of baseball games during his life. This one is the "Travel" edition of Saalfields Big League Baseball game from the 50's. There is also a full-sized edition of the game with Feller's endorsement as well as a plain Big League Baseball with no endorsement. They are all fairly simple games wherein the play result is determined by the spinner. The play results are supposed to be based on an average of all actual major league statistics.