Traethawd, 1884, ar hanes eglwys y Bedyddwyr, Bethel, Mynachlog-ddu, sir Benfro, gan 'Croniclwr', sef Thomas Rees, Felin Dyrch, Mynachlog-ddu, hendaid y rhoddwr. / An essay, 1884, in Welsh, on the history of Bethel Baptist Church, Mynachlog-ddu, co. Pembroke, by 'Croniclwr' (Thomas Rees, Felin Dyrch, Mynachlog-ddu), great grandfather of the donor.