| Collection | GB 0231 University of Aberdeen, Special Collections |
| Level | Sub-series |
| Ref No | MS 3682/4/1 |
| Title | 'Important correspondence' |
| Date | 1940s - 1990s |
| Extent | 3 boxes |
| Description | Correspondence with significant contemporaries and collaborators, containing details of Kosterlitz's and others' increasingly successful research in the area of narcotics and human physiology, 1940s - 1990s. Most of the letters date from the 1960s onwards. |
| Arrangement | The files are arranged alphabetically, by correspondent. |
| Access Status | Restricted |
| Access Conditions | Some records contain personal information and may be closed for 75 (for adults) and 100 (for children 16 and under) years under the Data Protection Act (1998) |