Transcripts of letters written by John Robinson of the Talysarn Slate Quarries, 1886, to Thomas Closs Williams concerning the Dinorwig disputes.

Typescript copies of letters written by W. J. Parry on the Dinorwic dispute of 1885-1886, with press cuttings of correspondence printed in Y Dinesydd Cymreig, October 1923.

A duplicate copy book by W. J. Parry containing copies of letters, 1923; lists of music plates and sheet music; a list of letters presented by W. J. Parry to the Carmel Chapel Library, Llanllechid, 1923; lists of Cefnfaes estates leases expiring in 1923; letters for the press entitled 'Helynt Llanberis, 1885-6' and 'Helynt Dinorwic 1885-6'.