Hidden Variables Charles Sheffield  

Sight of Proteus Charles Sheffield  

My Brother's Keeper Charles Sheffield  

The Nimrod Hunt Charles Sheffield  

Between the Strokes of Night Charles Sheffield  

Proteus Unbound Charles Sheffield  

Trader's World Charles Sheffield  

Summertide Charles Sheffield  

Divergence Charles Sheffield  

Cold as Ice Charles Sheffield  

Future Quartet Charles Sheffield  

The Compleat Mcandrew Charles Sheffield