The Ezra Stiles Papers contain correspondence; autograph manuscript writings, many incorporating maps and drawings; personal papers and artifacts; family papers; and writings by others and printed material owned by Ezra Stiles or the Stiles family. Correspondence, 1740s-1795, consists of incoming letters, autograph manuscript copies of outgoing letters, and related family and third-party correspondence. Writings by Stiles, 1740s-1795, include research notes, drafts, and other works, with emphases on biblical scholarship and languages; New England history, church history, and population; Native American population, languages, and cultures; and astronomy, meteorology, and silk production. Other papers include diaries relating to his research and writing, 1769-1795; diaries containing notes on travel in New England and the middle-Atlantic region, 1760-1794; diaries of weather observation in Newport, Rhode Island, and New Haven, Connecticut, 1763-1795; and sermons, 1751-1789. Most materials date from Stiles's years as a minister in Newport, Rhode Island, 1755-1777, or his career at Yale as a student and tutor, 1742-1755, and as president, from 1777 until his death in 1795. Also present is a small amount of manuscripts relating to New England history or the Stiles family, 1660s-1730s; family papers, 1790s-1830s; papers of later descendants, 1840-1940s; and printed material about Stiles and the Stiles Papers, 1950s-1990s. The Papers document Stiles's career as a clergyman and educator, his intellectual interests, and his engagement with colleagues and contemporary events. The Papers are a resource for the study of Yale and New Haven history, Native Americans in New England, and colonial and American religion, education, politics, science, and intellectual and social life.