Music manuscripts accumulated by J. Lloyd Williams, [1750x1945]; works by J. Lloyd Williams, [1890]-[1940]; material relating to the history and criticism of Welsh music, 1891-[1945]; and correspondence, 1899-1945.
Numerous collections of folk songs and hymn tunes accumulated by J. Lloyd Williams before and during his period as Editor of the Journal of the Welsh Folk-Song Society, including material which he himself had recorded and items submitted to him by others. Indexes, lists, related notes and press cuttings are also included.
Hymn tunes collected, [mid-19 cent.], by John Harris of Llechryd, Cardiganshire, and John Thomas of Llanrug. A poem by 'Ebeneser Clynog' (possibly Eben Fardd) appears on the inside back cover.
Hymn tunes composed, [mid-19 cent.], mainly by 'Aiddgarus' (E. Williams, Bethesda) and 'Ieuan Glan Geirionydd'. The fly-leaf bears the autograph of W. Lewis Walker and a note by Gwilym Cowlyd.