Ferris’s psychedelic photography is memorialised in an ongoing show at the Fashion and Textile Museum in London, Beautiful People: The Boutique in 1960s Counterculture, and also in his book, The Karl Ferris Experience, which is peppered with tales of sex, drugs and rock ’n’ roll. Quite a lot of sex, as it happens, as Ferris took the spirit of “free love” into a less romantic career as a “glamour” photographer for men’s magazines including Playboy and Oui. “I eventually wound up in Los Angeles, where there wasn’t much fashion work, and I didn’t want to stay in the music business. When it came to money, it was always ‘Speak to the manager’. They’d rip off pitches, try and get stuff for nothing, wouldn’t pay for stock. Jimi’s manager was the worst. It became really nasty.”

Many decades later, Ferris was sitting at a London café when Paul McCartney came strolling by. “He stopped, put his head down, and looked at me, and kept looking, then said ‘Karl Ferris, is it?’ I said, ‘My God man, how do you remember? It’s been all these years!’ He said, ‘Those days are imprinted on my mind.’ He sat down and had a coffee, and we talked about peace and love and groove. It was quite a time.”

Beautiful People continues at the Fashion and Textile Museum, London SE1 (fashiontextilemuseum.org) until March 13. To order The Karl Ferris Psychedelic Experience, go to mixbook.com