Letter book of Allan Searell Searell's correspondence with the new directors (consequent upon M.Kellar's [McKellar] death), mainly over the Hafod Cost-Sheets. Rights of property, including fishing-rights, at Sygun Fach. Searell asked to report on Gallt-y-llan and Croesor Quarries. Letters of 30 July and 4 August, 1864, especially important - because they enclose exhaustive estimates for the future development of Hafod y Llan Quarry up to a possible eighth year. Full analysis of expenditure. 1863-1864