Notes, in journal form, containing J. Lloyd Williams's observations and marks of individual botany students in practical and oral examinations, recorded during his visits to schools throughout Wales.
Papers relating to J. Lloyd Williams's memoirs entitled Atgofion Tri Chwarter Canrif; miscellaneous plays, sketches, lectures and radio scripts; and personalia.
Lecture and address notes relating to education and teaching, some delivered at school prize-giving ceremonies; religion; and Welsh nationalism and language. One address, delivered at Bangor, April 1935, relates to his life and work.
Photographs of Joseph Parry (mistakenly identified as Pencerdd Gwalia on the back of the photograph), Edith Wynne and three unidentified individuals; together with the publicity leaflets of Mme. Laura Evans-Williams.
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.
Transcripts, [1900x1940], by J. Lloyd Williams, from Maurice Edwards's manuscript, dated 1778, held at the Library of the University of Wales, Bangor (Bangor MS 2294).
