Murray Leinster, whose real name is Will F. Jenkins, has been entertaining the public with his exciting fiction for several decades. Called the dean of modern science-fiction, he was writing these amazing super-science adventures back in the early twenties before there ever was such a thing as an all-fantasy magazine. His short stories, novelettes, and serial novels have appeared in most of the major American magazines, both slick and pulp, and many have been reprinted all over the world. He has made a distinguished name for himself (or rather two names) in the fields of adventure, historical, western, sea, and suspense stories. Ace Books has still available the following Murray Leinster novels: CITY ON THE MOON (D-277), THE PIRATES OF ZAN and THE MUTANT WEAPON (D-403), and THE FORGOTTEN PLANET (D-528). * * * * * Here's a quick checklist of recent releases of ACE SCIENCE-FICTION BOOKS 35c D-498 GALACTIC DERELICT by Andre Norton D-504 MASTER OF THE WORLD by Jules Verne D-507 MEETING AT INFINITY by John Brunner _and_ BEYOND THE SILVER SKY by Kenneth Bulmer D-508 MORE MACABRE Edited by Donald A. Wollheim D-509 THE BEAST MASTER by Andre Norton _and_ STAR HUNTER by Andre Norton D-516 THE SWORDSMAN OF MARS by Otis Adelbert Kline D-517 BRING BACK YESTERDAY by A. Bertram Chandler _and_ THE TROUBLE WITH TYCHO by Clifford Simak 40c F-104 MAYDAY ORBIT by Poul Anderson _and_ NO MAN'S WORLD by Kenneth Bulmer F-105 THE BEST FROM FANTASY AND SCIENCE FICTION Fifth Series. Edited by Anthony Boucher. F-108 THE SUN SABOTEURS by Damon Knight _and_ THE LIGHT OF LILITH by G. McDonald Wallis F-109 STORM OVER WARLOCK by Andre Norton F-113 REBELS OF THE RED PLANET by Charles Fontenay _and_ 200 YEARS TO CHRISTMAS by J. T. McIntosh If you are missing any of these, they can be obtained directly from the publisher by sending the indicated sum, plus 5c handling fee, to Ace Books, Inc. (Sales Dept.), 23 West 47th St., New York 36, N. Y.