| Collection | GB 0231 University of Aberdeen, Special Collections |
| Level | Sub-series |
| Ref No | MS 3682/4/2 |
| Title | 'Old correspondence' |
| Date | 1940s - 1960s |
| Extent | 2 boxes |
| Description | Correspondence with colleagues, drug and instrument companies, 1940s - 1960s, containing details of Kosterlitz's own research and the work of contemporaries involved in similar research areas. |
| Arrangement | The files are arranged alphabetically, by correspondent. |
| Access Status | Restricted |
| Access Conditions | Most files in the sub-series are open, but some remain closed to inspection or have access restrictions, in compliance with data protection legislation. |