J. R. Heath,
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Music manuscripts of Dr J. R. Heath. An article entitled 'J. R. Heath, (1887-1950)' by David R. A. Evans was published in Welsh Music History, vol. 1 (1996) and a digital version is also available on NLW's Welsh Journals Online.
Heath, John R. (John Rippiner), 1887-1950.
Paul Corfield Godfrey,
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Many of the compositions have been published by Zarathustra Music.
Godfrey, Paul Corfield.
John Edwards,
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Papers of the composer and businessman who established Welsh Teldisc Ltd Record.
Edwards, John, 1905-1966.
W. Hubert Davies,
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Various arrangements for piano trios.
Davies, Hubert (William Hubert), 1893-1965.
W. Emlyn Davies,
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Manuscript scores of songs by him.
Davies, W. Emlyn (William Emlyn), 1899-1973
1997 Group
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Typescript copies of three posthumously published prose works by John Cowper Powys.