- TitleThe Third Secret (Original)
- Scripts / DocumentsMaterials held in BFI Special Collections
- THIRD SECRET / CRICHTON, CHARLES - Screenplay (final script) by Robert L Joseph, annotated - 153 sheets plus cover - most annotated on both sides - ITM-2967
Ephemera: publicity - Third Secret [Pressbook - medium] - - PBM-47989
Script - THIRD SECRET - Script type: Dialogue continuity, with trailer script - - SCR-17292