Analog Science Fiction/Science Fact, 1974/01

• Channel Markers • essay by Robert A. Heinlein • The Horus Errand • novelette by William E. Cochrane • Space Probe from Epsilon Boötis? • (1973) • essay by Duncan Lunan • The Astounding Dr. Amizov • short story by Richard F. DeBaun [as by R. F. DeBaun] • The Hole Man • short story by Larry Niven • The Sins of the Fathers (Part 3 of 3) • [Kyyra] • serial by Stanley Schmidt • The Reference Library • essay by P. Schuyler Miller •   Review: Ten Thousand Light-Years from Home by James Tiptree, Jr. • review by P. Schuyler Miller •   Review: John W. Campbell Anthology: Three Novels by John W. Campbell, Jr. • review by P. Schuyler Miller •   Review: Death Cell by Ron Goulart • review by P. Schuyler Miller •   Review: Shaggy Planet by Ron Goulart • review by P. Schuyler Miller •   Review: A Talent for the Invisible by Ron Goulart • review by P. Schuyler Miller •  Letter • essay by Greg Bear •  Letter • essay by Harlan Ellison •  Letter • essay by George Zebrowski •  Letter • essay by Alexander D. Wallace [as by Alexander Doniphan Wallace] •  Letter • essay by Brad Linaweaver •  Letter • essay by Bennie Grezlik [as by Bennie B. Grezlik]