Flandry of Terra - Poul Anderson

A collection of three Flandry tales:
THE GAME OF GLORY: Captain Flandry follows a dying man's clues to the watery provincial world of Nyanza, where a rebellion against the Empire may be brewing. A MESSAGE IN SECRET: Flandry ventures to the remote colonial world of Altai, whose human inhabitants haven't been in contact with the Terran Empire for centuries, and discovers that they are cutting a Faustian deal with the Merseians. THE PLAGUE OF MASTERS: Flandry, of his own volition, decides to investigate the remote and isolated world of Unan Besar, to see exactly why it is they have had no contact with the Empire in over 300 years.