Daughters of Earth
Judith Merril
Operation R.S.V.P.
H. Beam Piper
World of Wonder
Fletcher Pratt
The Blue Star
Uller Uprising
Federation (1)
Ullr Uprising
Tales from Gavagan's Bar
L. Sprague de Camp & Fletcher Pratt
Gavagan's Bar (1)
The Continent Makers and Other Tales of the Viagens
L. Sprague de Camp
Viagens Interplanetarias (1)