Vol. LXXIV, No. 6. Contents: 4 • Brass Tacks (Analog, February 1965) • [Brass Tacks] • essay by uncredited 7 • "Hyperinfracaniphilia" • essay by John W. Campbell, Jr. [as by John W. Campbell] 8 • Program for Lunar Landings • [Science Fact (Analog)] • essay by Joe Poyer 17 • The Mailman Cometh • novelette by Rick Raphael 33 • In Times to Come (Analog, February 1965) • [In Times to Come (Analog)] • essay by The Editor 34 • Photojournalist • short story by Mack Reynolds 41 • The Analytical Laboratory: November 1964 (Analog, February 1965) • [The Analytical Laboratory] • essay by The Editor 42 • The Pork Chop Tree • [The Hub] • short story by James H. Schmitz 46 • Coincidence Day • short story by John Brunner 54 • The Prophet of Dune (Part 2 of 5) • [Dune] • serial by Frank Herbert 87 • The Reference Library: Force Feeding Utopia (Analog, February 1965) • [The Reference Library] • essay by P. Schuyler Miller.