Typescript copies of letters from Tinbergen dated Kûngmiut, 20 April and Tasiussaq, 20 July 1933. Paginated 1 - 32. Some marginal notes and drawings.

MS. journal 8 August - 23 September 1932.

Scrapbook used for press-cuttings of the Dutch International Polar Year expedition to Greenland.

Two letters from Tinbergen to his parents, written from Altenberg, 18 and 29 March 1937; undated letter probably from the same period. Tinbergen spent the spring of 1937 working with Konrad Lorenz at the Lorenz family home, Altenberg, near Vienna.

Three letters from Tinbergen to his parents written in the hostage camp where he was interned for a time during the Second World War. The first two are undated but attached to envelopes postmarked 11 and 23 September 1942 respectively, the third is dated 27 September 1942. Letter from E.A. Tinbergen to Tinbergen's parents. Undated but from the time of Tinbergen's internment.

Correspondence regarding honorary membership of societies.

Report on the activities of N. Tinbergen as Oxford University Lecturer in Animal Behaviour from 1 October 1954 until Christmas 1958. Note on activities, March 1967.

Offers of posts: Emory University, Georgia, 1958 University of Miami, Florida, 1963 Center for Advanced Study in the Behavioral Sciences, Standford, California, 1968 University of British Columbia, 1971.

Correspondence regarding honorary membership of societies.

Correspondence relating to Tinbergen's Inaugural Lecture at Oxford, 6 March 1968. Tinbergen was appointed to a Chair in Animal Behaviour in 1966.

Correspondence regarding membership of societies.

Two letters congratulating Tinbergen for receiving the British Ornithological Union's Godwin-Salvin medal.

Invitations to serve on committees or act in advisory capacities.