Notice of the meeting only.

'The First World Conservation Lecture', presented at the Royal Institution, London, 12 Mar 1981. The Lecture, organised by the World Wildlife Fund, celebrated the 20th anniversary of the Fund and the first anniversary of the World Conservation Strategy. It was published in The Environmentalist, 1, 1981, and by the WWF. Correspondence arising and regarding publication and offprints of the published lecture.

Typescript notes, with manuscript revisions, probably for a speech.

Correspondence arising (including publication of the lecture) and newspaper cutting of report on the lecture; offprint of the published lecture ( Aberdeen University Review, No.171, Spring 1984).

Typescript notes, in the text Nicholson refers to the time when he started writing his book How Birds Live (1927) and states that this was '57 years ago'.

Typescript first page of script for a lecture or talk.

A suggested title for the talk was 'Ornithology - a round-up of present knowledge'. Correspondence chiefly regarding arrangements.

Letter regarding arrangements and a typescript draft, possibly incomplete.

Typescript draft with manuscript revisions.

Programme; manuscript and typescript notes; two typescript drafts with manuscript revisions; correspondence arising, chiefly regarding publication of the talk.

'The Environmental Movement - Where Will It Move Next?', Sir Halford J. Mackinder Lecture, Leicester Urban Studies Centre, Leicester Polytechnic, 15 May 1979. Correspondence etc regarding arrangements; manuscript and typescript notes and incomplete drafts of the lecture.

'The Environmental Movement - Where Will It Move Next?', Sir Halford J. Mackinder Lecture, Leicester Urban Studies Centre, Leicester Polytechnic, 15 May 1979. Correspondence arising and regarding publication; author's copy of the published lecture; newspaper cutting regarding the lecture.

Typescript notes and first page of typescript draft; the latter also has the inscription '?1979'.

Typescript draft with manuscript revisions; brief correspondence arising and draft summary of the address with Nicholson's revisions.

Esmée Fairbairn Lectures, King's College London, 28, 29 and 30 Apr 1980. The three public lectures, organised by the School of Environmental Studies, were collectively titled 'The Moment of Ecological Truth'. The respective titles of the individual lectures were as follows: 'The Nature of the Confrontation', 'Man's Awakening and Response' and 'The Quest for New Solutions'. Nicholson gave an introduction to the series immediately before the first lecture.

Early typescript notes outlining ideas for the series (some dated Aug 1979) and possibly for the first lecture; first page of an early typescript draft; manuscript draft of introduction to the series and a page of manuscript notes probably related to this; incomplete typescript draft; typescript of the introduction and first lecture, marked delivery copy, with further manuscript revisions.

Typescript notes and first page of a typescript draft [?early]; typescript headed 'First draft'; typescript, inscribed 'Delivery copy', with further manuscript revisions.

Incomplete typescript draft and a revised typescript draft with manuscript revisions.

Typescript marked 'Delivery copy' with manuscript revisions.