The correspondence has been arranged alphabetically by surname, organisation, country or subject. The entries described as 'general', for example 'A (general)', contain letters from various correspondents. The replies from Buchman and the Oxford Group are mainly carbon copies.

The four boxes in this section labelled Frank Buchman (MS. Oxford Group 3/21-24) contain a little original material but mainly consist of biographical information about Buchman gathered before and after his death.

The two boxes in this section labelled Finance (MS. Oxford Group 3/50-51) contain personal financial papers of Buchman together with finanical papers concerning the Oxford Group.