sentences:  Like his father, Buxtorf maintained relations with several learned Jews.He employed Abraham Braunschweig to purchase Hebrew books for him; and for many years he corresponded with the scholarly Jacob Roman of Constantinople regarding the acquisition of Hebrew manuscripts and rare printed works.Buxtorf was also engaged in the sale of Hebrew books; among his purchasers being the commercial representative of Cardinal Richelieu, Stella de Tery et Morimont, who occasionally sojourned at Basel, and Johann Heinrich Hottinger at Zurich, with whom Buxtorf was on terms of close friendship.