There have been two accruals. The first accrual is arranged into 5 series: manuscripts, radio and television scripts, correspondence, research materials, Merlin publishing files. It contains a signed pen sketch by Ronald Searle (1920-) dated Paris, 1956. The second accrual consists of two brief letters from Beckett to Diane Root. The collection has been supplemented by books which have been catalogued for Research Collections and periodicals which have not been catalogued.