| RefNo | Title | Date |
| XZM/430 | Hamburg Ballet | |
| XZM/1849 | Hamburg Ballet \ Oversize | |
| HB/E/27/3 | John Gregory \ Correspondence \ 1988 | 1988 |
| HB/E/28/2 | John Gregory \ Correspondence \ 1994-1995 | 1994-1995 |
| HB/E/27/4 | John Gregory \ Correspondence \ 1989 | 1989 |
| HB/E/28/3 | John Gregory \ Correspondence \ 1996 | 1996 |