H Series
- H-20 SF Kenneth Bulmer The Key to Irunium / Alan Schwartz The Wandering Tellurian (1967)
- H-21 SF Jack Vance The Last Castle / Tony Russell Wayman World Of The Sleeper (1967)
- H-22 SF Tom Purdom Five Against Arlane / Emil Petaja Lord of the Green Planet (1967)
- H-27 SF Juanita Coulson Crisis on Cheiron / E. C. Tubb The Winds of Gath (1967)
- H-29 SF Walt Richmond and Leigh Richmond The Lost Millennium / A. Bertram Chandler The Road to the Rim (1967)
- H-34 SF Mack Reynolds Computer War / E. C. Tubb Death is a Dream (1967)
- H-36 SF Emil Petaja Tramontane / Michael Moorcock The Wrecks Of Time (1967)
- H-40 SF E. C. Tubb C.O.D. Mars / John T. Phillifent (as John Rackham) Alien Sea (1968)
- H-48 SF Ellen Wobig The Youth Monopoly / Lan Wright The Pictures Of Pavanne (1968)
- H-51 SF John M. Faucette Crown Of Infinity / Emil Petaja The Prism (1968)
- H-56 SF Ernest Hill Pity About Earth / R. A. Lafferty Space Chantey (1968)
- H-59 SF Philip E. High The Time Mercenaries / Louis Trimble Anthropol (1968)
- H-65 SF Mack Reynolds Mercenary From Tomorrow / Kenneth Bulmer The Key to Venudine (1968)
- H-70 SF Dean R. Koontz Star Quest / Emil Petaja Doom of the Green Planet (1968)
- H-77 SF Juanita Coulson The Singing Stones / E. C. Tubb Derai (1968)
- H-85 SF Philip E. High Invader on My Back / Donald A. Wollheim (as David Grinnell) and Lin Carter Destination: Saturn (1968)
- H-91 SF Laurence M. Janifer and S.J. Treibich Target Terra / John Rackham The Proxima Project (1968)
- H-95 SF Clifford D. Simak So Bright the Vision / Jeff Sutton The Man Who Saw Tomorrow (1968)
- H-103 SF Mack Reynolds Code Duello / John M. Faucette The Age of Ruin (1968)
Read more about this topic: List Of Ace SF Double Titles
Famous quotes containing the word series:
“Every man sees in his relatives, and especially in his cousins, a series of grotesque caricatures of himself.”
—H.L. (Henry Lewis)
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