Knute Rockne Autographed Memorabilia. Check out Knute Rockne Autographed The Four Winners Book Sincerely - PSA/DNA. This The Four Winners book that has been personally hand signed by Knute Rockne. The book has been certified authentic by PSA/DNA and comes with their authentication sticker and matching full page certificate of authenticity. PSA/DNA is the leading third-party authenticator in the autograph industry. This product is the perfect collectible for any sports fan or memorabilia collector. Commemorate the great career of Knute Rockne with this autographed item, or check out other souvenirs at SportsCollectibles.com for more products autographed by Knute Rockne. When it comes to NFL Memorabilia, SportsCollectibles.com offers a wide selection of Knute Rockne autographed memorabilia. Product will ship in 1-3 business days with free shipping on orders over $200. Buy with confidence as this is an authenticated Knute Rockne autograph.