Star prince Charlie Poul Anderson  

The Stars Are Also Fire (Harvest of Stars) Poul Anderson  

Stone in Heaven Ill Poul Anderson  

Strangers from earth;: [eight tales of vaulting imagination] Poul Anderson  

Time and stars Poul Anderson  

Trader to the Stars Poul Anderson  

Trouble Twisters Poul Anderson  

The Winter of the World Poul Anderson  

The dancer from Atlantis Poul Anderson  

The horn of time (The Gregg Press science fiction series) Poul Anderson  

The queen of air and darkness and other stories Poul Anderson  

The worlds of Poul Anderson (The Gregg Press science fiction series) Poul Anderson