 Details of the early history and development of Cwmparc are contained within the booklet, "History of Cwmparc.King Coal Invades a Sylvan Valley" by Mr Gwyn Prosser which was awarded the prize at Treorchy Semi-National Eisteddfod in 1923.The author describes Cwmparc in 1923 as "a mining village of considerable pretensions, aspiring almost to the more dignified name of township" with a population of about 5,000.