Tolkien wrote a brief "Sketch of the Mythology", which included the tales of Beren and Lúthien and of Túrin; and that sketch eventually evolved into the "Quenta Silmarillion", an epic history that Tolkien started three times but never published. Tolkien desperately hoped to publish it along with "The Lord of the Rings", but publishers (both Allen & Unwin and Collins) declined. Moreover, printing costs were very high in 1950s Britain, requiring "The Lord of the Rings" to be published in three volumes. The story of this continuous redrafting is told in the posthumous series "The History of Middle-earth", edited by Tolkien's son, Christopher Tolkien. From around 1936, Tolkien began to extend this framework to include the tale of "The Fall of Númenor", which was inspired by the legend of Atlantis.