It was 50 years ago today (August 30th, 1972) that John Lennon and Yoko Ono performed their only publicly announced, full-length concerts at New York City's Madison Square Garden. The two shows, known as the One To One concerts, included an afternoon matinee and an evening performance, and benefited the Willowbrook House, with the proceeds from the concerts going to help establish new accommodations for the mentally handicapped inhabitants of the former Willowbrook institution in Long Island, New York. The shows also included performances by Sha-Na-Na, Stevie Wonder, and Roberta Flack. Jo...