John_Lennon_Yoko_Ono_Merry_Xmas_War_Is_Over_Billboard_December_25_1971 Published December 23, 2014 at 525 × 713 in Daily 70s Ad: John & Yoko, ‘Happy Xmas (War Is Over)’ (1971) John & Yoko, ‘Happy Xmas (War Is Over)’ (‘Billboard’ magazine, December 25, 1971)