Music manuscripts of the composer Mervyn Burtch. Original opus numbering (where known) is given in square brackets, e.g. [M.103] at the end of each file level description.

Autograph reproduction of Missa Cambrensis for soli, chorus and orchestra by Dr Gomer Llywelyn Jones ('Llywelyn Gomer'), formerly Associate Professor of Music, Michigan State University, and Director of the University's Symphony Orchestra. 'Begun in Cardiff, Wales, 1946-1947 Completed in Pembrokeshire, Wales, 1953-1954' (f. iv).

The full choral and orchestral score with separate instrumental parts, 1910, of 'The Battle of the Baltic', a setting for male voice chorus and orchestra by T. Osborne Roberts of the words by Thomas Campbell, composed for competition at the National Eisteddfod of Wales, Colwyn Bay, 1910, together with printed copies of the work in reduced score and of the choral parts in tonic sol-fa notation.

Cerddoriaeth sol-ffa a hen nodiant yn bennaf gan, neu a drefnwyd gan, ac yn llaw, y Parchedig W. E. Penllyn Jones, gan gynnwys unawdau, deuawdau, cytganau, emyn-donau ac emynau = Music, both sol-ffa and old notation, chiefly by, or arranged by, and in the hand of, the Reverend W. E. Penllyn Jones, and which includes solos, duets, choruses, hymn-tunes and hymns.
Ceir emyn-donau hefyd gan R[owland] H[uw] Pritchard (f. 43), James Leach (f. 82), Chester G. Allen (f. 104) ac eraill; emyn gan y Parchedig D[avid] Tecwyn Evans (f. 48); a chopi o gytgan, ynghyd â nodyn byr, yn llaw 'L. D. J.' sef Lewis Davies Jones ('Llew Tegid') (f. 60) = Also included are hymn tunes by R[owland] H[uw] Pritchard (f. 43), James Leach (f. 82), Chester G. Allen (f. 104) and others; a hymn by the Reverend D[avid] Tecwyn Evans (f. 48); and a copy of a chorus, together with a brief note, in the hand of 'L. D. J.' (Lewis Davies Jones ('Llew Tegid')) (f. 60).