Pregethau, llyfr cyfrif a dyddiaduron,
- NLW MS 1317B
- Ffeil
- 1859-1866.
Notes of sermons preached by North Wales Calvinistic Methodist ministers, including John Elias, Henry Rees, John Jones (Llanllyfni) and others; an account book of John Williams, carrier and ferryman, 1866; diaries of Hugh Williams, 1859-1860 and 1862.