Painting…p. Detlefsen…the Red Caboose

Hi! I am extremely interested in information about paul detelfsen. Was he in fact Norman Rocwell? Who was he? Is that a print that you have, or a painting? Is it on cardboard? Was he a german? He depicks the America that shouldve been. Help me find more information about him. The world needs to know. Nobody has influenced the southern USA more than him. y.