Two as yet unpublished letters by E. R. Dodds demonstrate his wide-ranging interests in what he termed "irrationalism". The first, from October 17, 1945, is a response to an inquiry about the significance of Dionysiac cults for medieval
Nelson, Max. (2000). E. R. Dodds: Two Unpublished Letters on Ancient 'Irrationalism'. Eikasmos, 11, 401-408.