Records of Messrs David and David, comprising records of valuations of properties in South Wales and the adjoining counties of England made during the period 1846-1933, including Breconshire, 1872-1912; Carmarthenshire, 1865-1884; Glamorgan, 1846-1926; Monmouthshire, 1867-1933; Gloucestershire, 1875-1880; Herefordshire, 1874-1881; and Somerset, 1876-1885. The records include surveys, reports, valuations, correspondence, notes, plans, valuation schedules, sale notices and copy agreements. Many of the records reflect the industrial and urban development of South Wales and quite a number of the individual valuations are of land subject to compulsory purchase by railway companies and public utilities.

Papers relating mainly to the passing of a Bill to authorise the Golden Valley Railway Company to extend its railway to Hay, 1875-1883, including legal papers, 1875-1877; financial papers, 1876-1883; and miscellaneous papers, 1876-1883.