In the early days of the American Antiquarian Society, founder Isaiah Thomas asked members to send materials for preservation in the Society's library at Worcester, Massachusetts. Over the course of two hundred years, generations of the Society's members, friends, and staff have ably answered Thomas's call. This exhibition celebrates the generosity and farsightedness of some of the many collectors, book dealers, and librarians who have, each in his or her own way, contributed to the greatness of AAS.