Mercy Warren, born a member of the Otis family, was a prolific writer and historian. This collection of her personal papers and writings consists of a 500-page letterbook containing her correspondence to 35 prominent people, including Abigail, John, and Samuel Adams, Elbridge Gerry, Henry Knox, Mrs. John Hancock, and Martha Washington. Also included are 52 pages of Warren's published poetry. Mercy Warren is perhaps best known for her three-volume work, History of the Rise, Progress and Termination of the American Revolution (1805).