In Byron Erickson's "Oh, Grow Up!" Donald Duck and his nephews declare civil war! Huey, Louie, and Dewey again earn Don's ire with Carl Barks' destructive "Gold Finder"; then, in the conclusion of Floyd Gottfredson's "Boxing Champion," Mickey and Butch replace boxer Ruffhouse Rat - and face murderous Creamo Catnera at ringside!