Guest-edited by Richard Avedon, Harper’s Bazaar’s April 1965 issue attempted to channel the frenetic energy of a transformative moment in history. It ended up offering a glimpse of the future.

Featuring British supermodel Jean Shrimpton on the cover, the issue—dubbed “a partial passport to the off-beat side of Now”—offered a kaleidoscopic exploration of people and ideas who were ...

Featuring British supermodel Jean Shrimpton on the cover, the issue—dubbed “a partial passport to the off-beat side of Now”—offered ... Life Seemed Perfect. Then Came MDMA Therapy.