Llyfr Peter Bailey Williams,
Llyfr Peter Bailey Williams,
Barddoniaeth,
Barddoniaeth,
Letters, vol. I,
Letters, vol. I,
Miscellanea,
Miscellanea,
Miscellanea,
Miscellanea,
Miscellanea,
Miscellanea,
Miscellanea,
Miscellanea,
Miscellanea,
Miscellanea,
Miscellanea,
Miscellanea,
Barddoniaeth, etc.,
Barddoniaeth, etc.,
Englynion, &c.,
Englynion, &c.,
Barddoniaeth,
Barddoniaeth,
Wordlists, notes and transcripts,
Wordlists, notes and transcripts,
Cell-gasgl Sion Lleyn ...,
Cell-gasgl Sion Lleyn ...,