Can younger generations imagine the magnitude of the Beatles craze? Sure, in 2023 a Taylor Swift performance caused a small earthquake in Seattle. But what about fans passing out at the foot of the stage, as one sees in footage of old rock concerts? Paul McCartney is here to refresh our memories. The singer recently discovered more than 250 undeveloped photographs he took with his Pentax camera during the Beatles’ first U.S. tour and their subsequent rise to fame. Capturing New York City in the 1960s, intimate backstage moments, members of the band’s entourage, and portraits of the fab four, the images offer a personal account of what it was like to go from small gigs in the U.K. to international stardom. “Looking at these photos now, decades after they were taken, I find there’s a sort of innocence about them,” says McCartney. “Everything was new to us at this point.” —Jeanne Malle