Filmography
| Role | Title | Year | Character |
|---|---|---|---|
| Writer | Star Wars: Episode V – Das Imperium schlägt zurück | 1980 | |
| Writer | Rio Bravo | 1959 | |
| Writer | Tote schlafen fest | 1946 | |
| Writer | Der Tod kennt keine Wiederkehr | 1973 | |
| Writer | El Dorado | 1966 | |
| Writer | Hatari! | 1962 | |
| Writer | Rio Lobo | 1970 |