Fourth Mansions is a science fiction novel by American author R. A. Lafferty, first published as an Ace Science Fiction Special in 1969. A UK hardcover was issued by Dennis Dobson in 1972, with a Star Books paperback following in 1977. A French translation appeared in 1973. American reprint editions were later issued by Bart Books and by Wildside Press.Fourth Mansions was nominated for the Nebula Award for Best Novel in 1970, and placed fifth in the Locus Poll for best novel in the same year. Source: Wikipedia (en)