This is a set of black-and-white cards which depicts memorable events in baseball history. The cards measure 2-1/2" X 3" and have a picture frame border and event title on the card fronts. The card backs describe the event in detail. Twenty cards were produced in this set by the Swell Gum Company of Philadelphia. Each card is numbered, and card numbers 9,11, 16 and 20 are considered more difficult to obstain. The Feller card is graded EX-MT by PSA.