Examples of sonography, the system of short-hand devised by D. S. Davies, with an account from William James Morgan, Carmarthen for printing D. S. Davies: Manual of Sonography ... (London, 1887).
'D. S. Davis's Book of Anecdotes or of Records', begun when he was at the Theological Seminary, Allegheny City, Pennsylvania, 1861, with numerous notes on Welsh shorthand, financial accounts, etc.
A history of Rehoboth Congregational church, Brynmawr; an address by D. S. Davies on the proposed formation by the Welsh Congregationalists of a foreign mission society, and a note by him on Welsh Congregationalists and politics; notes for a lecture on George Washington; accounts relating to publications with which D. S. Davies was connected; poems by William Davies ('Gwilym Ebrill'), Waunarlwydd; a transcript of the will of Hannah Evans, Pensarn, near Carmarthen; and drafts of letters by D. S. Davies.