Liber epistolaris: a commonplace book of Henry Oldenburg Copy letters and notes by Henry Oldenburg, first Secretary of the Royal Society, from immediately before and during his term of office. With a presentation note: "A Commonplace book formerly belonging to Henry Oldenburg EsqR Secretary to the R.Soc, at the time of its first institution. Presented by the Earl of Morton" [James Douglas, 14th Earl of Morton]. 6 June 1655 - 28 October 1661