Peace on Earth from 1939

An anti-war car­toon from MGM, with the grand­fa­ther voiced by Mel Blanc. It was nom­i­nat­ed for an Acad­e­my Award for Short Sub­jects (Car­toons). More on its Wikipedia page.

Via Fredy Cham­pag­ne, of the VFP Gold­en Rule Project, which Friends Jour­nal pro­filed in August 2013.