John William Thomas ('Seryddwr yn Arsyllfa Greenwich' and 'Arolygwr yn Arsyllfa Greenwich'): Almanac . . . (Llanrwst, 1838-1840), John Roberts: Almanac . . . (Llanrwst, 1841), Almanac . . . wedi ei gasglu o waith Moore, gan Richardson, ac ereill (Llanrwst, 1842-1843), Y Diweddar Robert Roberts: Almanac . . . (Llanrwst, 1844), and Y Diweddar Robert Roberts: Yr Hen Gyfaill: neu Almanac . . . (Llanrwst, 1845), with a few manuscript entries by William Evans, London and Llanrwst, including memoranda, French numerals, and lodging and washing accounts with Jane Jones.