[Natural History]. THE CORRESPONDENCE OF HENRY OLDENBURG 1641-1673. Volumes 1-9. Edited and translated by A. Rupert Hall & Marie Boas Hall. Madison & Milwaukee: University of Wisconsin Press, 1965 – 1973. First Editions. Large 8vo, brown cloth, in fine or nearly fine condition. Dustjackets very good overall, all price-clipped, few short tears and light soiling. Portrait and several plates. An additional four volumes were published later in different format. Each volume has more than 500 pages. His correspondence “presents an unparalleled picture of the intellectual life of the late seventeenth century.” As one of two Secretaries of the Royal Society of London for the Improvement of Natural Knowledge, he “conducted a vast correspondence with the most important scientists of his day, English and Continental. Nearly all of the major ideas embraced by the scientific revolution of the seventeenth century passed through his hands” – dj.