Correspondence and papers regarding the World Bird Fund idea, the relationship between ICBP, the International Union for the Conservation of Nature and Natural Recources and the World Wildlife Fund, and general business. Chiefly 1978.

Correspondents include Sir Peter Scott and S. Dillon Ripley. Included is menu from official ICBP lunch, May 1959, annotated by Nicholson with a note re an issue discussed, and signed on the back by a number of attendees.