A copy, with manuscript notes by Walter Davies and others, of John David Rhys : Cambrobrytannicae Cymraecaeve linguae institutiones et rudimenta ... (London, 1592).
A large group of personal letters to and from various members of the family of John Jenkins, including letters from him, his mother, his brothers, his wife, and his son, John Heyward Jenkins (afterwards known as John Heyward).
Sketches by Walter Davies of early inscribed stones, and transcripts of late monumental inscriptions; notes on British history and archaeology; a letter, 1663, from Efan Watkis, Salop to Robert Vaughan, Hengwrt; etc.
A copy of William Schickard: Horologivm Hebraem, sive Consilium, quomodo sancta lingua spacio xxiv, horarum, a totidem collegis, seu eorundem semisse sufficienter apprehendi queat, Septies Combrabatum ... (London, 1639), and Rota Hebraea pro facilitate conivgandi pridem inventa, sculpta et explicata ... (London, 1639).
Miscellaneous notes and extracts by Walter Davies relating mainly to Welsh history, archaeology, topography, etc.; a list of Montgomeryshire sheriffs; memoranda relating to the Manafon national school, 1832-1835; etc.
Summaries made by Walter Davies of John Jones : The History of Wales (London, 1824) and Hugh Owen and J.B. Blakeway : History of Shrewsbury (London, 1822).
References, in the hand of John Jenkins, to sources of information on notable Welshmen and an attempt at ascertaining, by means of comparative chronology, the dates of certain Welsh chieftains.
Poems, essays, letters, and miscellanea by Walter Davies used by D. Silvan Evans when he was compiling Gwaith ... Walter ... Davies ... (Carmarthen and London, 1868).
Miscellaneous genealogical notes chiefly written by Walter Davies with some in the autograph of John Jenkins and Angharad Llwyd and mainly relating to Montgomeryshire.
A collection of manuscripts known as the Frances Althea Trevor Manuscripts, which is one of three groups, collectively called the Crosswood Manuscripts. It contains numerous manuscripts by or relating to Walter Davies (Gwallter Mechain) and John Jenkins (Ifor Ceri).
Some of the poems of Huw Morus transcribed by Walter Davies for his edition of Eos Ceiriog : Sef Casgliad o Ber Ganiadau Huw Morus ... (Wrexham, 1823), together with a part of the editor's introduction.
Copies by Walter Davies of englynion by himself and by Owen Williams (Waunfawr), John Jones (Tegid), Thomas Edwards (Twm o'r Nant), Robert Davies (Bardd Nantglyn), etc.
