The tune book of John Roberts, Llanegryn, 1826, and later of Bontdolgadfan, containing anthems, hymn-tunes and psalm-tunes by John Roberts, Pantyniwl, John Williams, Abermawddach, H[ugh] Jones, Maesglasau, W. Williams, Llanegryn, John Edwards, Llangadog, the Reverend Richard Phillips, Bala, John Roberts, Llanbrynmair and others; and a hymn for use in Sunday Schools ('Yn ysgol bur fy Nuw').