Ordem de leitura
1
Envoy to New Worlds
1963
2
Galactic Diplomat
1965
3
Retief's War
1965
4
Retief and the Warlords
1968
5
Ambassador to Space
1969
6
Retief of the CDT
1971
7
Retief's Ransom
1971
8
Emissary To The Stars
1975
9
Retief At Large
1978
10
Retief Unbound
1979
Mais de William H. Keith
SEAL Team Seven
22 livros
Carrier
22 livros
Doctor Who Game
13 livros
Seals: The Warrior Breed
11 livros
Buck Rogers
11 livros
Freedom's Rangers
6 livros