- Series: Utopia-Briefkasten Series Record # 56690
- Utopia-Briefkasten
- Sie fragen — Utopia antwortet (Kampf um den Vulkan) (1953) [ES] by uncredited
- Sie fragen — Utopia antwortet (Wettflug zum Abendstern) (1953) [ES] by uncredited
- Sie fragen — Utopia antwortet (In den Dschungeln der Venus) (1953) [ES] by uncredited
- Sie fragen — Utopia antwortet (Entscheidung in Sydney) (1953) [ES] by uncredited
- Utopia-Briefkasten (Siedler auf fremdem Stern) (1953) [ES] by uncredited
- Utopia-Briefkasten (Das Rennen der Raketenfahrer) (1953) [ES] by uncredited
- Utopia-Briefkasten (Bazillus L13) (1953) [ES] by uncredited
- Utopia-Briefkasten (Der Wettermacher von Teneriffa) (1954) [ES] by uncredited
- Utopia-Briefkasten (Sturm über In-Salah) (1954) [ES] by uncredited
- Utopia-Briefkasten (Gespenster im Weltraum) (1954) [ES] by uncredited
- Utopia-Briefkasten (Schiffbruch im Sonnensee) (1954) [ES] by uncredited
- Utopia-Briefkasten (Uran-Fieber) (1954) [ES] by uncredited
-
Utopia-Briefkasten (Hölle Merkur)?Utopia-Briefkasten (Hoelle Merkur)(1954) [ES] by uncredited
- Utopia-Briefkasten (Atombomben im Weltraum) (1954) [ES] by uncredited
- Utopia-Briefkasten (Der Stern der Wunder) (1955) [ES] by uncredited
- Utopia-Briefkasten (Der Kriegsplanet) (1955) [ES] by uncredited
- Utopia-Briefkasten (Marsfeuer) (1955) [ES] by uncredited