Photograph of Hedd Wyn.
Notes written by R. Silyn Roberts when visiting the graves of fallen soldiers in Flanders, 1923, including the grave of Hedd Wyn,
Llythyr oddi wrth Y Parch J.J. Williams, Treforis, at Silyn,
Llythyr oddi wrth Y Parch. J.J. Williams at Silyn,
Llythyr oddi wrth Silyn at 'Ex Sergeant Idwal Williams, Penmorfa,
Llythyr oddi wrth Major T.R. Evans o Ffrainc, at R. Silyn Roberts,
Llythyr oddi wrth J. R. Jones, Trawsfynydd, at Silyn,
Llythyr oddi wrth Evan Evans, Yr Ysgwrn, Trawsfynydd (tad Hedd Wyn) at R Silyn Roberts,
Llythyr oddi wrth Evan Evans, Yr Ysgwrn, at Silyn,
Llythyr oddi wrth Elizabeth Williams, o Poperinghe, at Silyn,
Llythyr copi oddi wrth Silyn at Evan Jones, Trawsfynydd,
Letters and accounts regarding ‘Welsh Relief Funds’, collected for alienating distress in Wales during the War,
Cofeb 'Hedd Wyn',