5 • Prophecy • essay by John W. Campbell, Jr. [as by John W. Campbell ]8 • Satan's World (Part 1 of 4) • [Nicholas Van Rijn] • serial by Poul Anderson49 • In Times to Come (Analog, May 1968) • [In Times to Come (Analog)] • essay by The Editor50 • Exile to Hell • shortstory by Isaac Asimov54 • Conquest by Default • novelette by Vernor Vinge85 • His Master's Vice • [Olivine, Renegade • 1] • shortstory by Howard L. Myers [as by Verge Foray ]101 • The Analytical Laboratory: February 1968 (Analog, May 1968) • [The Analytical Laboratory] • essay by The Editor102 • Fear Hound • [Rescue Squad] • novelette by Katherine MacLean125 • Project Island Bounce • shortstory by Lawrence A. Perkins137 • Skysign • novelette by James Blish162 • The Reference Library: Whose Revolution? (Analog, May 1968) • [The Reference Library] • essay by P. Schuyler Miller168 • Brass Tacks (Analog, May 1968) • [Brass Tacks] • essay by uncredited
