New York: Mercury, 1964. Softcover. Digest magazine. 132 pp. Pictorial wrappers. Cover art by Emsh. Contributors: Mack Reynolds, Damon Knight, Zhuravleva Valentina and Wendell Brown.
New York: Galaxy, 1967. Softcover. Digest Magazine. 164 pp. Cover art: Schelling. Contributors: Mack Reynolds, Fred Saberhagen and Sam Moskowitz.
New York: Galaxy, 1965. Softcover. Digest Magazine. 164 pp. Cover art: Wenzel. Contributors: Fritz Leiber, Mack Reynolds, Robert S. Richardson and Gordon R. Dickson.
New York: Mercury, 1965. Softcover. Digest magazine. 132 pp. Pictorial wrappers. Cover art by Bonestell. Sixteenth Anniversary All Star Issue. Contributors: Poul Anderson, Isaac Asimov, James Blish, Ray Bradbury, Avram Davison, Judith Merril, Mack Reynolds, Jack Sharkey, Robert F. Young and Roger Zelazny.
![Item #1007202452 The Key to Venudine/Mercenary from Tomorrow [Ace Double H-65]. Kenneth...](https://32-1rarebooks.cdn.bibliopolis.com/pictures/1007202452.jpeg?width=320&height=427&fit=bounds&auto=webp&v=1728359744)
New York: Ace, 1968. Softcover. Small 8vo., Ace Double H-65. PBO and true first. Mercenary From Tomorrow, 122 pp., cover art by Jack Gaughan; The Key to Venudine, 131 pp., cover art by Kelly Freas.
![Item #1101202426 Eternity [Baen 55913]. Mack Reynolds, Dean Ing](https://32-1rarebooks.cdn.bibliopolis.com/pictures/1101202426.jpeg?width=320&height=427&fit=bounds&auto=webp&v=1730570331)
New York: Baen, 1984. Softcover. Small 8vo. Baen 55913.
![Item #1101202424 Home Sweet Home 2010 A.D. [Dell 003658]. Mack Reynolds, Dean Ing](https://32-1rarebooks.cdn.bibliopolis.com/pictures/1101202424.jpeg?width=320&height=427&fit=bounds&auto=webp&v=1730570331)
New York: Dell, 1984. Softcover. Small 8vo. Paperback Original [PBO]. Dell 003658.
![Item #1007202422 The Rival Rigelians/Nebula Alert [Ace Double G-632]. Mack Reynolds/A. Bertram...](https://32-1rarebooks.cdn.bibliopolis.com/pictures/1007202422.jpeg?width=320&height=427&fit=bounds&auto=webp&v=1728334195)
New York: Ace, 1967. Softcover. Small 8vo., 121 pp./132 pp. Ace Double G-632. Cover art by Peter Michael and Kelly Freas.
![Item #1002202422 Code Duello/The Age of Ruin [Ace Double H-103]. Mack Reynolds/John M. Faucette](https://32-1rarebooks.cdn.bibliopolis.com/pictures/1002202422.jpeg?width=320&height=427&fit=bounds&auto=webp&v=1727968025)
New York: Ace, 1969. Softcover. 12mo. Ace Double H-103. The Age of Ruin, 114 pp., cover art by Gray Morrow; Code Duello, 141 pp, cover art by Kelly Freas.