Robert Jones Derfel MSS,
Robert Jones Derfel MSS,
Cerddi a phregethau,
Cerddi a phregethau,
'Declaration of Principles', &c.,
'Declaration of Principles', &c.,
Pregethau,
Pregethau,
'Enwogion Cymru',
'Enwogion Cymru',
Scrap-books,
Scrap-books,
Scrap album,
Scrap album,
Miscellanea,
Miscellanea,
Letters relating to R. J. Derfel,
Letters relating to R. J. Derfel,
T. J. Roberts: papers relating to R. J. Derfel,
T. J. Roberts: papers relating to R. J. Derfel,
Letters to R. J. Derfel,
Letters to R. J. Derfel,
