Issues include details of YNT business at their various reserves with contributions from members, including George de Boer (Nov 1960, Nov 1961, Summer 1966 and May 1976). Also possible partial newsletter with article by Miss F. E. Crackles (Dec 1962).

Includes correspondence related to proposed content for possible set of cards designed for each Reserve (Jul 1968, May 1969). Also contains form asking for assistance with collecting information for Flora of the East Riding of Yorkshire (c.1971), Ecological Report on Spurn and list of nationwide Nature Trails for National Nature Week.