The Minnesota Twins, in cooperation with 7-Eleven and the Fire Marshall's Association, issued this set of 13 baseball fire safety cards. The card fronts feature full-color pictures of Twins players. A fire safety tip and short player history appear on the back. The cards were given out at all 7-Eleven stores in the state and at the Twins June 3 baseball game. Each fan received one baseball card with a poster which told how to collect the other cards in the set. Twelve cards feature players and the 13th card has an artists rendering of the Twins players on the front and a checklist of this set on the back. A group of 50,000 cards was distributed to fifth graders throughout the state by the fire departments. - 2006 Standard Catalog of Baseball Cards, 15th Edition.