Abstract Richard H. Popkin was an influential historian of philosophy. His 1960 work "The History of Scepticism from Erasmus to Descartes" introduced many historians to a previously unrecognised influence on Western thought in the seventeenth century, the Pyrrhonian Scepticism of Sextus Empiricus. Popkin was also an internationally acclaimed scholar on Jewish and Christian millenarianism and messianism. The collection includes over six decades of Popkin’s academic papers and correspondence, as well...