Four-Day Planet / Lone Star Planet
| First published | 1979 |
|---|---|
| Publisher | Ace Books |
| Format | Paperback |
| Type | Omnibus |
| Cover art | Michael Whelan |
| Pages | 340 |
| Price | $2.25 |
| ISBN | 044124890X |
- "First Ace printing: April 1979"; no number line
- Cover art by Michael Whelan on copyright page, the artwork is also 'signed'
- The only author credited on the cover is H. Beam Piper.
- None of the three title pages (one for the omnibus and two for the constituent novels) lists the authors, but every even-numbered page of ''Four-Day Planet'' says "H. Beam Piper" at the top and every even-numbered page of ''Lone Star Planet'' says "H. Beam Piper and John J. McGuire" at the top.
| Page | Title | Author(s) | Type |
|---|---|---|---|
| 1 | Four-Day Planet | H. Beam Piper | Novel |
| 217 | Lone Star Planet | H. Beam Piper & John J. McGuire | Novel |
| Title | Year | Publisher | Format | Type | Catalog ID | Cover Artist | Pages | |
|---|---|---|---|---|---|---|---|---|
| Four-Day Planet / Lone Star Planet |
|
1984 | Ace Science Fiction Books | Paperback | Omnibus | Michael Whelan | 340 |