Papurau William Rowland (1910-1980,yn cynnwys nodiadau ar lenyddiaeth Gymraeg a chaneuon gwerin ar gyfer amrywiol sgyrsiau a darlithoedd,[1960au]; sgriptiau radio a nodiadau cysylltiedig, 1937-1950; llythyrau,1919-1980; papurau personol, yn cynnwys cytundebau hawlfraint,1910-1955; rhaglenni a thaflenni,1930-1980; a chyfnodolion a thorion papur newydd, 1932-1980 = Papers of William Rowland, 1910-1980, including notes on Welsh literature and folk songs and notes for various talks and lectures, [1960s]; radio scripts and accompanying notes, 1937-1950; letters, 1919-1980; personal papers, including copyright agreements, 1910-1955; programmes and leaflets, 1930-1980; and periodicals and newspaper cuttings, 1932-1980.