Glenn "Pop" Warner coached at several schools throughout his career, including the University of Georgia, Cornell University, University of Pittsburgh, Stanford University, Iowa State University, and Temple University. One of his most famous stints was at the Carlisle Indian Industrial School, where he coached Jim Thorpe, who went on to become the first president of the National Football League, an Olympic Gold Medalist, and is widely considered one of the best overall athletes in history. Warner wrote one of the first important books of football strategy, "Football for Coaches and Players", published in 1927. Though the shift was invented by Stagg, Warner's single wing and double wing formations greatly improved upon it; for almost 40 years, these were among the most important formations in football. As part of his single and double wing formations, Warner was one of the first coaches to effectively utilize the forward pass. Among his other innovations are modern blocking schemes, the three-point stance, and the reverse play. The youth football league, Pop Warner Little Scholars, was named in his honor.