Starship Poul Anderson   0523485336

Twilight World Poul Anderson   0523485611

Vault of the Ages Poul Anderson   0425043363

Time Patrolman Poul Anderson   0812530764

Tales of the Flying Mountains Poul Anderson   081253073X

The Long Night Poul Anderson   0812513967

Flandry of Terra Poul Anderson   0317135147

Circus of Hells Poul Anderson   0451151135

The Shield of Time Poul Anderson   0312850883

Kinship With the Stars Poul Anderson   0812518144

Explorations Poul Anderson   0812515366

Conflict Poul Anderson   0727843648

Three Hearts and Three Lions Poul Anderson   0671721860

The Day of Their Return Poul Anderson   0785729631