Football coach responsible for devising the double-wing formation; the “Pop Warner League” is named in his honor. Vintage AQS on an off-white 3 x 5 page. Warner writes, “On the football field as nowhere else is the lesson taught that nothing worth while can be accomplished with a half hearted effort. Glenn S. Warner, Stanford University, Dec. 6 - 1927.” In fine condition, with typed collector’s notations to bottom, punch holes to top edge and slight mounting remnants to two corners. COA Steve Grad/PSA/DNA and R&R COA.
