The group consists of reports and surveys, 1987-1995, prepared for the Institute of Welsh Affairs; draft, interim and progress reports, 1987-1995; and reports, 1992-1993, prepared in connection with the 2010 project.

A microfilm copy of part of PRO MS LR2/236 containing a survey of Merioneth, 1592.

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.

Surveys, rental surveys, customals, schedules and particulars of leases, and reports and valuations on individual properties of the Monmouthshire estate and its predecessors.