Brain Twister
Laurence Mark Janifer & Gordon Randall Garrett
We Are for the Dark (1987-90)
Robert Silverberg
Collected Silverberg (7)
Boundary
Eric Flint & Rik E. Spoor
Boundary (1)
The Light of Other Days
Stephen Baxter & Arthur C. Clarke
Grumbles from the grave
Robert A. Heinlein; edited by Virginia Heinlein