| Reference Number | Title | Date | Series |
| RNT/CO/1/69 | The Freeway | 1974 | Costume Department Production Files |
| RNT/SM/1/83 | The Freeway | 1974 | Prompt Scripts |
| RNT/PR/4/1/80 | The Freeway | September 1974 - October 1974 | Press Production Review Files |
| RNT/PR/3/79 | The Freeway | 1974 | Rehearsal and Production Photographs |
| RNT/LI/3/14 | The Freeway | 1974 | Scripts - Later Drafts |
| JH/13/2/2 | National Theatre | 1964-1985 | Programmes - non-Herbert designed productions |
| RNT/PP/2/1/94 | The Freeway | October 1974 | Pre-South Bank Posters |
| RNT/PP/1/1/302 | The Freeway | October 1974 | Pre-South Bank Programmes |
| RNT/PO/5/55 | The Freeway | 1974 | Set Photographs |