Hominids (Neanderthal Parallax) Robert J. Sawyer   0765345005

Hybrids (Neanderthal Parallax) Robert J. Sawyer   076534906X

J. Neil Schulman's Alongside Night J. Neil Schulman   1584451203

Dreamships Melissa Scott   0812513029

TRADER'S WORLD CHARLES SHEFFIELD   0345344324

Cold As Ice Charles Sheffield   0812511638

The Ganymede Club (Ganymede Club) Charles Sheffield   0812544609

Convergent Series Charles Sheffield   0671877917

Tomorrow and Tomorrow CHARLES SHEFFIELD   0553578898

My Brother's Keeper Charles Sheffield   0671578731

First Lensman Edward E. Smith   1882968107

Gray Lensman Edward E. Smith   1882968123

Second Stage Lensmen Edward E. Smith   1882968131

Children of the Lens Edward E. Smith   188296814X