| Reference Number | Title | Date | Series |
| RNT/PR/2/1/131 | [Heartbreak House / Happy Days] | 20 December 1974 | Press Releases 1960-1979 |
| RNT/PR/2/1/133 | [Heartbreak House / Happy Days] | 17 Feb 1975 | Press Releases 1960-1979 |
| RNT/PR/4/1/84 | Heartbreak House | March 1975 - June 1975 | Press Production Review Files |
| RNT/PP/1/1/306 | Heartbreak House | February 1975 | Pre-South Bank Programmes |
| RNT/PR/4/1/83 | Heartbreak House | February 1975 - October 1975 | Press Production Review Files |
| RNT/PP/3/6/21 | Heartbreak House | 1975 | Touring Printwork |
| RNT/CO/1/72 | Heartbreak House | 1975 | Costume Department Production Files |
| RNT/PR/2/1/132 | Newly planned Old Vic programme after delays on South Bank site | c.1974 | Press Releases 1960-1979 |
| RNT/PP/1/6/46 | Heartbreak House | 14 April 1975 | Touring programmes |
| RNT/PP/1/6/47 | Heartbreak House | 13 May 1975 | Touring programmes |
| RNT/PP/2/6/363 | Heartbreak House | 1975 | Other Venue Posters |
| RNT/PP/3/1/2 | 1971-1975 | 1971-1975 | NT Production related printwork |
| RNT/SM/1/88 | Heartbreak House | 1975 | Prompt Scripts |
| RNT/PO/5/58 | Heartbreak House | 1975 | Set Photographs |
| RNT/PP/2/1/97 | Heartbreak House | February 1975 | Pre-South Bank Posters |
| RNT/PR/3/82 | Heartbreak House | 1975 | Rehearsal and Production Photographs |