| 1 |
Alternate Empires
|
Gregory Benford
&
Martin H. Greenberg
|
1989 |
Anthology
|
| 2 |
Alternate Heroes
|
Gregory Benford
&
Martin H. Greenberg
|
1990 |
Anthology
|
| 3 |
Alternate Wars
|
Gregory Benford
&
Martin H. Greenberg
|
1991 |
Anthology
|
| 4 |
Alternate Americas
|
Gregory Benford
&
Martin H. Greenberg
|
1992 |
Anthology
|
|
What Might Have Been: Volumes 1 & 2: Alternate Empires / Alternate Heroes
|
Gregory Benford
&
Martin H. Greenberg
|
1990 |
Omnibus
|
|
What Might Have Been: Volumes 3 & 4: Alternate Wars / Alternate Americas
|
Gregory Benford
&
Martin H. Greenberg
|
1992 |
Omnibus
|