On 23 July 1930 the unveiling of the memorial to Evan James and James James took place at Ynysangharad Park. In the words of the Observer, it was a “Red Letter Day in the history of Pontypridd”. As shown below on the invitations given that day, a procession formed outside the Municipal Buildings and marched to Ynysangharad Park where about 10,000 people had assembled. Lord Treowen unveiled the memorial in the presence of the Archdruid ‘Pedrog' and other members of the Gorsedd.
A year following the unveiling of the memorial in Ynysangharad Park, a marble tablet was erected in Mill Street, Pontypridd, marking the place where Evan James' woollen factory once stood.
Unfortunately, the tablet was later damaged during building works and a far more indistinctive tablet remains at the side of the building today.
The tablet's unveiling in 1931 was the culminating point of a project started over twenty years previously by Mr Rhys Morgan and the Pontypridd Cymrodorion Society, as the minutes of the Pontypridd Urban District Council show.
An important year in Pontypridd town's commemoration of the National Anthem was 1956. A week of commemorative services and celebrations were held during the anthem's centenary year that included religious services, singing festivals, school concerts, sports days, and a ten-mile race between Mountain Ash and Pontypridd. The culmination was a celebrity concert including a performance by Cilfynydd's world famous opera singer Geraint Evans. Beyond Pontypridd, the Western Mail sponsored a Schools' Essay competition. Unsurprisingly, the subject of the essay was ‘The Welsh National Anthem’ or ‘Yr Anthem Genedlaethol Cymru’ (sic.).