Gohebiaeth, gwreiddiol a llungopïau, a phapurau eraill, yn ymdrin â'r ffrwydriadau adeg yr Arwisgo yng Nghastell Caernarfon, 1969/ Correspondence, originals and photocopies, and other papers relating to the bombings at the time of the Investiture at Caernarfon Castle, 1969.

Eight scrapbooks compiled by Major Francis Jones (1908-1993) comprising press cuttings from regional and national newspapers, 1966-1969, relating to events leading up to the Investiture of Prince Charles as Prince of Wales at Caernarfon Castle in 1969, and to the Investiture itself.