| Description | i. Cyfrifon ysgolion Sul dosbarth Croesoswallt
ii. A few regulations to be proposed at the Sunday School meeting held at Tabernacle, 1833
iii. Llythyr oddi wrth Dr Thomas Phillips at Mr Robert Owen, Ysgol Feistr, Llansantffraid, 1844
iv. Llythyr oddi wrth Dr Phillips at Mr Newell ynglyn a'r Feibl Gymdeithas, 1852
v. Llythyr drafft oddi wrth Mr Newell ynghylch y Feibl Gymdeithas yn Nhrefaldwyn, 1852 |