Comprises: Of Worlds Beyond: The Science of Science Fiction Writing. A Symposium by Robert A. Heinlein, John Taine, Jack Williamson, A.E. van Vogt, L. Sprague de Camp, Edward E. Smith, John W. Campbell, Jr. Edited by Eshbach. First binding state of author's first book. 1947. * Tyrant of Time. No. 146 of 500 hand-numbered copies, special limited inscribed presentation copy, signed on the limitation page "For Leif D. Ayer - with thanks for your patience, and with the hope that you'll find this collection worth waiting for. Cordially, L.A. Eshbach." Signed by Leif Ayer on the front free endpaper. [1955]. Together, 2 volumes. 7½x5, red cloth, spines lettered in gilt, pictorial jackets. First Editions.

Of Worlds Beyond is the first nonfiction book and anthology about science fiction, with contributions from many of the great writer’s of the day. Eshbach (1910-2003) is the founder and publisher of Fantasy Press, which is “one of the earliest small presses that preserved in book form novels and stories first published in the early SF magazines, including works by A.E. van Vogt, John W. Campbell, L. Sprague de Camp, Stanley G. Weinbaum, and P. Schuyler Miller…” - see locusmag.com.