"This record is for sets of Ceredigion and its predecessors as a single work. Individual copies should be catalogued in their own records, and not be combined here."

The Cardiganshire Antiquarian Society was established in 1909 and published five parts of its 'Transactions' (vol. i, parts 1-4, and vol. 2, part 1) between 1909 and 1915. Post-Great War, the society was resuscitated in 1922, and published vols 3-14 (with gaps) between 1924 and 1939. No vol. 6 was published, members being given a collection of Cardiganshire folk songs. Nor vols 10 or 14, when members were given copies of J. H. Salter, 'The flowering plants & ferns of Cardiganshire' (Univ. Wales Press, 1935) and David Thomas, 'Animal call words: a study of human migration' (Spurrell, 1939). The society's activities were again suspended, 1939-1946, with the new series of transactions starting in 1950 as 'Ceredigion : cylchgrawn Cymdeithas Hynafiaethwyr sir Aberteifi = journal of the Cardiganshire Antiquarian Society', and being renamed 'Ceredigion : cylchgrawn Cymdeithas Hynafiaethwyr Ceredigion = journal of the Ceredigion Antiquarian Society' in 1973, and 'Ceredigion : cylchgrawn Cymdeithas Hanes Ceredigion = journal of the Ceredigion Historical Society' in 2002.