Color scan, provided by Ross Allen, of the certificate issued to C. R. Vincent, Jr. for participation in WJY's July 2, 1921 broadcast of the Dempsey-Carpentier heavyweight championship boxing match. (According to Voice-Broadcasting the Stirring Progress of the "Battle of the Century, "C. R. Vincent of the Plainfield Radio Association arranged for the reception of the returns at the Shackamaxon Golf Club, Westfield, N. J. The entire voice description of the fight was clearly received and every body was surprised and delighted. A check for $50.00 was sent in to be added to the fund.")
The eight (facsimile) signatures are: J. Andrew White, Acting President of the National Amateur Wireless Association; Anne Morgan, Chairman, Executive Committee, American Committee for Devastated France; Franklin D. Roosevelt, President, The Navy Club, plus fighters Jack Dempsey and Georges Carpentier, and finally Madison Square Garden representatives G. L. "Tex" Rickard, Frank E. Coultry, and Julius Hopp.