CD + Download version of the MLB Game Worn Jerseys of the Double-Knit Era Guide. A CD copy will be sent to the address you specify and you will have the chance to download the digital version upon check out. A complete reference guide for every jersey collector, this massive guide contains over 1500 pages. Eligible for upgrade pricing. If you are upgrading or entering a promo code, you will have the ability to enter the code on the checkout page. You have the ability to print chapters at home if you desire.