According to the vendor, whose husband was an airline pilot for Qantas, these signatures were obtained when John and Cynthia Lennon and George and Patti Harrison flew from London to Inida on 15th February, 1968 to study transcendental meditation under Maharishi Mahesh Yogi. Paul McCartney, Jane Asher, Ringo and Maureen Starr joined them four days later. It was on this trip that The Beatles became disenchanted with the Maharishi, causing them to leave ahead of schedule.