J. R. R. Tolkien members of the informal literary discussion group known as the Inklings. Tolkien was appointed a Commander of the Order of the British Empire by Queen Elizabeth II on 28 March 1972. After Tolkien's death, his son Christopher published a series of works based on his father's extensive notes and unpublished manuscripts, including "The Silmarillion". These, together with "The Hobbit" and "The Lord of the Rings", form a connected body of tales, poems, fictional histories, invented languages, and literary essays about a fantasy world called Arda and Middle-earth within it. Between 1951 and 1955, Tolkien applied the term "legendarium" to the
J. R. R. Tolkien in a letter to his son Christopher: Tolkien was horrified by the 1945 atomic bombings of Hiroshima and Nagasaki, referring to the scientists of the Manhattan Project as "these lunatic physicists" and "Babel-builders". During most of his own life conservationism was not yet on the political agenda, and Tolkien himself did not directly express conservationist views—except in some private letters, in which he tells about his fondness for forests and sadness at tree-felling. In later years, a number of authors of biographies or literary analyses of Tolkien conclude that during his writing of "The Lord of the Rings", Tolkien gained