'Rev. W. Hughes and a group of native students' (c.1890au) Math Eitemau Uwchlwytho gan Y Bywgraffiadur Cymreig / Dictionary of Welsh Biography
Nkanza, Daniel Harvey, Frank Teva Clark, Kinkasa (c.1888) Math Eitemau Uwchlwytho gan Y Bywgraffiadur Cymreig / Dictionary of Welsh Biography
Daniel Harvey (c.1888-90) Math Eitemau Uwchlwytho gan Y Bywgraffiadur Cymreig / Dictionary of Welsh Biography
Kinkasa, Parch William Hughes a Nkanza (1886) Math Eitemau Uwchlwytho gan Y Bywgraffiadur Cymreig / Dictionary of Welsh Biography
