Signatures of members of the Cardiganshire Antiquarian Society who were present at Llwyndyrys on 24 May 1930 when Thomas spoke of his archaeological researches (ff. 1-3). Also included is a list of people who received off-prints of an article written by Thomas (ff. 43 verso-48 verso, inverted text).

Four exercise books containing notes by Thomas on the history of, and archaeological discoveries at, Llwyndyrys in Llandygwydd, Cardiganshire.