Retief Unbound, which was sold as "Retief 10," includes five of six stories from Retief 01 - Envoy to New Worlds: “Protocol”, “Sealed Orders”, “Aide Memoire”, “Policy”, and “Palace Revolution”; it did not include “Cultural Exchange”. It also included the entire short novel Retief 07 - Retief's Ransom. “Cultural Exchange” has been restored to this edition so that it is actually a complete copy of Envoy to New Worlds, Retief Unbound, and Retief’s Ransom in one ebook.