| Reference Number | Title | Date | Series |
| RNT/PP/1/2/221 | The Diary of One Who Vanished | 3 November 1999 | Lyttelton Programmes |
| RNT/PR/3/528 | The Diary of One Who Vanished | 1999 | Rehearsal and Production Photographs |
| RNT/PP/5/369 | The Diary of One Who Vanished | 1999 | Rehearsal Photographs |
| RNT/PP/2/2/205 | The Diary of One Who Vanished | 3 November 1999 | Lyttelton Posters |
| RNT/PR/2/3/285 | English National Opera and Royal National Theatre in first ever collaboration | 20 July 1999 | Press Releases 1990-1999 |
| RNT/PR/2/3/330 | The English National Opera and the Royal National Theatre present 'Diary of One Who Vanished' | c. [October] 1999 | Press Releases 1990-1999 |
| RNT/PR/2/3/284 | Production news from the Royal National Theatre | 19 July 1999 | Press Releases 1990-1999 |
| RNT/PR/4/1/682 | The Diary of One Who Vanished | September 1999 - March 2000 | Press Production Review Files |