Manuscripts of Owen Owens comprising for the most part notes of sermons preached by himself and others, 1816-1860, including those delivered at Rhes-y-cae chapel near Nannerch, Flintshire, and Salem, Cilcain. The collection also includes diaries, 1822-1835, of Owens; correspondence, 1828-1858, addressed to Owens; an almanac, 1833, with entries by Owens, largely comprising of preaching engagements; and miscellaneous papers.

Papurau ymchwil yn ymwneud â'i draethawd MTh 'Bywyd a Gwaith William Williams o'r Wern 1781-1840' (Bangor, 1981) a'i draethawd MPhil 'Astudiaeth hanesyddol o Annibynwyr Siroedd Dinbych a Fflint 1863-1953 (Bangor, 1993),[1981]-1993 = Research papers relating to his MTh thesis 'Bywyd a Gwaith William Williams o'r Wern 1781-1840' (Bangor, 1981) and his MPhil thesis 'Astudiaeth Hanesyddol o Annibynwyr Siroedd Dinbych a Fflint 1863-1953' (Bangor, 1993), [1981]-1993.