Shelfmarks MS. 15041/1728 and MS. 15041/1729 comprise two separate envelopes of correspondence placed in a larger one which is inscribed 'Tansley and Elton'.

MS. 15041/1729 relates to Elton and comprises personal correspondence referring to various matters, including ornithology (1931-1932) and Nature Conservancy business (from 1954); draft of biographical note on Elton by Nicholson; some correspondence subsequent to Elton's death.