Cast & crew
Post Office Box 1001 (1950)
Directed by Julio Salvador Written by Julio Coll, Antonio Isasi-Isasmendi
Cast
| Ricardo Fuentes | |
| Elena Espejo | Carmen |
| Xan das Bolas | |
| Luis Pérez de León | Don |
| Carlos Muñoz Arosa | Rafael |
| Conrado San Martín | Miguel Echevierra |
| Manuel de Juan | Marcial |
| Guillermo Marín | Eyewitness |
| Carlos Ronda | Policía |
| Modesto Cid | Photographer |
| Casimiro Hurtado | Pascual Fumasoli |
| Emilio Fábregas | Acting Commissioner |
| Miguel Ángel Valdivieso | Vendedor |
| Rafael Navarro | Prologue |
| Marta Grau | Lola |
| Tomás Blanco | Antonio Berrutti |
| Eugenio Testa | Julián |
| José Goula | Postmaster |
Crew
| Josep Maria Forn | Production Secretary |
| Julio Coll | Screenplay |
| Pascual Bibian | Assistant Editor |
| Francisco Pérez Riba | Assistant Director |
| Miguel Grau | Production Director |
| Práxedes Martínez | Makeup Artist |
| Pilar Campanales | Hairstylist |
| Antonio Turell | Makeup Artist |
| Antonio Isasi-Isasmendi | Screenstory |
| Julio Coll | Screenstory |
| Antonio Isasi-Isasmendi | Dialogue |
| Julio Coll | Dialogue |
| Julio Salvador | Director |
| Antonio Isasi-Isasmendi | Editor |
| Ramón Ferrés | Original Music Composer |
| Jesús Castro Blanco | Assistant Director |
| José Luis Pérez de Rozas | Still Photographer |
| Antonio Isasi-Isasmendi | Screenplay |
| Federico G. Larraya | Director of Photography |
| Mario Bistagne | Camera Operator |