| RefNo | Title | Date |
| HB/E/29/2 | John Gregory \ Correspondence \ Royal Ballet School | 1985 |
| HB/E/11/1 | Harlequin Ballet Company \ Correspondence \ Special Letters | 1959-1969 |
| HB/E/27/7 | John Gregory \ Correspondence \ 1992 | 1992 |
| HB/E/28/1 | John Gregory \ Correspondence \ 1993 | 1993 |
| HB/E/28/2 | John Gregory \ Correspondence \ 1994-1995 | 1994-1995 |
| HB/E/28/3 | John Gregory \ Correspondence \ 1996 | 1996 |
| HB/E/27/5 | John Gregory \ Correspondence \ 1990 | 1990 |
| XZG/693 | National Organisation for Dance and Mime in association with Sadler's Wells Theatre and Pineapple Dance Studios \ Sadler's Wells Theatre, London \ 27 March 1983 \ Dancing for Riverside | 27 March 1983 |