The fonds consists of: research notes; correspondence; census material; manuscript photocopies, transcriptions and proofs produced in the production of The Winding Stair (1929): Manuscript materials for The Cornell Yeats (1995) published by Cornell University Press. In addition to material on Yeat's The Winding Stair (1929), the research includes related material from The Winding Stair and Other Poems (1933) and Words for Music Perhaps. Also included is a set of corrected page proofs for Druid Craft (1971).