He took an interest in the history of Wales, particularly the history of Calvinistic Methodism in Wales, and wrote regularly for Y Goleuad, Y Drysorfa, Y Traethodydd, and local papers such as The Llanelly Mercury and The Welsh Gazette (see his Bibliogaphy in Cylch. Cymd. Hanes M.C., 47). He was co-editor of Y Pair, the college magazine, when he was in Bala, and he edited the journal of the Calvinistic Methodist history society from 1933 to 1947, and contributed much to it. He was a member of the history committee of his Connexion from 1926 till his death, and was both secretary of the committee for a long period (1930-60), and keeper of the Calvinistic Methodist Archives in the N.L.W. He was also a member of the court of the National Library for many years.

He took a great interest in the Methodist ‘fathers’, particularly Howel Harris. He researched assiduously in Harris' diaries, publishing extensive excerpts from them in the journal mentioned above, and in his books. He wrote the history of Gyfylchi and Pontrhyd-y-fen chapels (1926), and of Morfa church, Kidwelly (1930); and many of his interesting essays were collected in five volumes: Golud a mawl dyffryn Tywi (1936); Gwrid ar orwel ym Morgannwg (1938); Treftadaeth y Cenfu a Maes Gwenllian (1941); Cwmsêl a Chefn Sidan (1946); and Allt Cunedda, Llechdwnni a Mwdlwscwm (1955). The excerpts which he transcribed from the Trefeca diaries appeared in Howell Harris, reformer and soldier (1958); Howell Harris's visits to London (1960); and Howell Harris's visits to Pembrokeshire (which was published by his widow in 1966). These volumes are of particular value to those seeking information on the life and career of the reformer from Trefeca. He d. 10 Feb. 1961 at his home in Penparcau, Aberystwyth, and was buried in the cemetery at Mynydd y Garreg.