| The Star Country | 1986 |
| Dragon Season | 1991 |
| Missing Man | 1998 |
| Red Moon | 2000 |
| Tango Midnight | 2003 |
| Anthologies Edited | |
| Sacred Visions (with Andrew M. Greeley, Martin H. Greenberg) | 1991 |
| Non-Fiction | |
| Who's Who in Space: The First 25 Years | 1987 |
| Deke!: An Autobiography (with Donald K. Slayton) | 1994 |
| Anthologies Contributed To | |
| Universe 8 | 1978 |
| Shadows 7 | 1984 |
| Borderlands 3 | 1993 |
| Card Sharks | 1993 |
| Great American Ghost Stories, Volume Two | 1993 |
| The Year's Best Science Fiction Fourteenth Annual Collection | 1997 |
| Short Stories | |
| "Hunting" | 1978 |
| "Stillwater, 1896" | 1984 |
| "A Method of Reaching Extreme Altitudes" | 1993 |
| "Night Life" | 1993 |
| "The Longer Voyage" | 1996 |