You won’t see a GQ magazine cover designed by Michelangelo. Or the Time layout by Leonardo. It’s a safe bet that Van Gogh would’ve turned down offers by Tiger Beat or Seventeen. Probably. But you will find Muhammad Ali given a renaissance, St. Sebastian treatment on a cover of Esquire. There’s a rich history of artists who have lent their lens, photographic and otherwise, to some of the best-known monthlies in publishing.