| Reference Number | Title | Date | Series |
| RNT/SM/2/1/47 | The Architect and the Emperor of Assyria | 2 February 1971 - 30 July 1971 | Pre-South Bank Show Reports |
| RNT/PR/3/50 | The Architect and the Emperor of Assyria | 1971 | Rehearsal and Production Photographs |
| RNT/PR/2/1/82 | NT to stage Arrabal's The Architect and the Emperor of Assyria | 12 December 1970 | Press Releases 1960-1979 |
| RNT/PP/5/14 | The Architect and the Emperor of Assyria | 1971 | Rehearsal Photographs |
| RNT/PR/4/1/44 | The Architect and the Emperor of Assyria | January 1971 - February 1971 | Press Production Review Files |
| RNT/SM/1/53 | The Architect and the Emperor of Assyria | 1971 | Prompt Scripts |
| JH/13/2/2 | National Theatre | 1964-1985 | Programmes - non-Herbert designed productions |
| RNT/PR/4/8/257 | 1964 - 1972 Press reviews | 1964 - 1972 | Press General Review Files |
| RNT/PP/1/1/220 | The Architect and the Emperor of Assyria | February 1971 | Pre-South Bank Programmes |
| RNT/PO/5/32 | The Architect and the Emperor of Assyria | 1971 | Set Photographs |
| RNT/PP/2/1/62 | The Architect and the Emperor of Assyria | February 1971 | Pre-South Bank Posters |