John Roberts, Glyn-neath, diaries,
- NLW MSS 16017-16018.
- Is-fonds
- 1889-1892.
Rhan oBrythonydd Papers
Llawlyfr Undeb Bedyddwyr Cymru, 1889-1890, with a few entries in the hand of the Rev. John Roberts, Glyn-neath, plus inserts, 1891-1892. Formerly D. Pryse Williams 376-377.