After production of The Muppets Musicians of Bremen in 1972, Henson considered other Muppetland specials, however none were produced; according to Jim Henson: The Biography: “Jim was filing away ideas for future installments of Tales from Muppetland, such as adaptations of Aladdin and Jack and the Giant Killer. He was also interested in adapting several books that were personally meaningful to him, including The 13 Clocks ("the one property I've wanted to do with the Muppets for twenty years," Jim wrote) and Margery Williams's sentimental The Velveteen Rabbit, which Jim briefly considered producing with Raymond Wagner at MGM Studios. None of these projects, however, would advance much further than his notebooks.”