Unlike baseball, which has been the source or setting for thousands of titles over the years, literature related to football is more finite. That's a good thing - you don't have to be Croesus to build a decent library devoted to the sport. Walter Camp produced several early books on the game. Football then became very popular as a college sport during the 1910s and '20s, and that era produced several collectible books by or about such figures as William H. Edwards, Red Grange, Grantland Rice, Jim Thorpe, and a little later Knute Rockne.