iThe series comprises loose sheets and three notebooks containing surveys and valuations of Cwyber, 1751, Garn and Cwyber demesnes, 1753, Cae'r berllan, 1755, Rhuddlan (Cwyber and Tre Llewelyn), 1781, Henllan, 1807, Llanrwst, 1811, Bryntirion [c. 1834], Pentre Du and Merllyn, 1836, Bryn Issa, Llanefydd [1846x1849], other estates purchased by George Griffith in Llanefydd, [post-1864], Cleiriach and houses in Denbigh, [c. 1866], Bryn Llwyd and Wern Isaf, 1880, showing variously their size, yield, soil quality and yearly value.