The musical film adaptation "Mary Poppins" was released by Walt Disney Pictures in 1964. Primarily based on the original 1934 novel of the same name, it also lifted elements from the 1935 sequel "Mary Poppins Comes Back". The novels were loved by Disney's daughters when they were children, and Disney spent 20 years trying to purchase the film rights to "Mary Poppins", which included visits to Travers at her home in London. In 1961, Travers arrived in Los Angeles on a flight from London, her first-class ticket having been paid for by Disney, and finally agreed to sell the rights. Travers was an adviser in the production, but she disapproved of the Poppins character in its Disney version; with harsher aspects diluted, she felt ambivalent about the music and she so hated the use of animation that she ruled out any further adaptations of the series. She received no invitation to the film's star-studded première until she "embarrassed a Disney executive into extending one." At the after-party, she said loudly "Well. The first thing that has to go is the animation sequence." Disney replied, "Pamela, the ship has sailed" and walked away.