Llythyr printiedig, 14 Rhagfyr 1927, ynghylch Cymdeithas Addysg y Gweithwyr a anfonwyd gan y bardd a'r darlithydd prifysgol R. Williams Parry i'r newyddlen Y Dinesydd Cymreig. = Printed letter, 14 December 1927, regarding the Workers' Educational Association sent by poet and university lecturer R. Williams Parry to the newspaper Y Dinesydd Cymreig.
Llythyrau, 1899-1917, at Robert (Silyn) Roberts oddi wrth yr ysgolhaig, bardd, beirniad a'r golygydd W. J. (William John) Gruffydd (1881-1954), ac un llythyr, 1918, oddi wrth Gwenda Gruffydd, gwraig W. J. Gruffydd. Cyfeirir at yrfa academaidd W. J. Gruffydd yn Rhydychen; ei garwriaeth â'i ddarpar-wraig Gwenda Evans ac â merch o'r enw Winnie, a'i briodas yn y pen draw â Gwenda; "Miss P." (sef Mary Parry, wedyn Mary Silyn Roberts); barddoniaeth, gan gynnwys enghreifftiau o waith W. J. Gruffydd, ac yntau'n holi am farddoniaeth o eiddo Silyn; ei waith golygyddol; crefydd, athroniaeth, gwleidyddiaeth a daliadau personol; a'i gyfnod o wasanaeth yn y llynges, ac yntau'n dyheu am gael gadael. Mae llythyr Gwenda Gruffydd yn cyfeirio at ei brwydr i ryddhau ei gŵr o'r llynges, ac yn erfyn ar ddylanwad Silyn i'w chynorthwyo yn hyn o beth, gyda chefnogaeth 'Tom Jones' (sef, mae'n debyg, Dr Thomas Jones (1870-1955)). Ceir yn ogystal broflen o erthygl dan y teitl 'Addysg yng Nghymru' a ysgrifenwyd gan W. J. Gruffydd ar gyfer Barn Cymru Ieuanc (Rhif 2); llythyr printiedig a ysgrifenwyd gan W. J. Gruffydd i'r newyddlen Y Brython; a llythyr printiedig dan y teitl 'W. J. Gruffydd a'r Hen Feirdd' a anfonwyd gan W. J. Gruffydd at gyhoeddiad nas enwir ac a grybwylla enwau Silyn Roberts ac R. Williams Parry. Ynghyd â thrawsgrifiadau teipysgrif o'r llythyrau a disgrifiad cryno o'r deunydd atodol.
= Letters, 1899-1917, to Robert (Silyn) Roberts from the academic, poet, adjudicator and editor W. J. (William John) Gruffydd (1881-1954) and one letter, 1918, from Gwenda Gruffydd, wife of W. J. Gruffydd. References include W. J. Gruffydd's academic career at Oxford; his courtship of Gwenda (Evans, later his wife), his dalliance with a woman named Winnie, and his eventual marriage to Gwenda; "Miss P." (Mary Parry, later Mary Silyn Roberts); poetry, including examples of work by W. J. Gruffydd and his request to receive some of Silyn's poetry; his editorial work; religion, philosophy, politics and personal theories; and his period in the navy and his longing to leave the service. Gwenda Gruffydd's letter refers to her battle to have her husband released from his naval service, requesting Silyn, with the support of "Tom Jones" (most likely Dr Thomas Jones (1870-1955)) to help bring this about. Together with the proof of an article titled 'Addysg yng Nghymru' ('Education in Wales') written by W. J. Gruffydd for Barn Cymru Ieuanc (No. 2); printed letter written by W. J. Gruffydd for Y Brython newspaper; and a printed letter titled 'W. J. Gruffydd a'r Hen Feirdd' ('W. J. Gruffydd and the Old Poets'), sent by W. J. Gruffydd to an unnamed publication and which references Silyn Roberts and R. Williams Parry. Also included are typescript transcripts of the letters and a brief description of the supplementary material.