Contents of an envelope inscribed as 'Tresco [Scilly Isles] Bird pop[ulatio]n'. Typescript draft titled 'A New Tool for Land Studies: Trails on Tresco', with manuscript revisions, and a few related papers.

The draft appears to relate to Nicholson's development of the 'Geogram'.

See MSS. 15041/703-704 for further material relating to the Tresco Geogram project.