Nicholson proved assistance with Bocking's dissertation, a major part of which covered the work of the Nature Conservancy. The interviews were conducted on 15 May 1990 and 1 June 1990.

This file comprises later correspondence arising from further research by Bocking. Nicholson's letter of 19 April 1996 recounts some of the important periods of his career, in particular his years at the Nature Conservancy.

See also MS. 15041/33 and MS. 15041/34.