The A.D. Club is a final club established at Harvard University in 1836, the continuation of a chapter of the Alpha Delta Phi fraternity existing as an honorary chapter until 1846, and then as a regular chapter until the late 1850s. At that time, owing to the prevailing sentiment against such societies, it became a strictly secret society, known among its members as the "Haidee," the name of a college boat. The chapter surrendered its charter in 1865, and has since existed as the A.D. Club.
In 1872, the club rooms were moved from the upper story of a brick house on Palmer Street to a building on Brattle Street. These rooms were occupied until 1878, when a club-house was obtained on the corner of Mt. Auburn and Dunster Streets. In 1900, the club moved to its present club-house at 1 Plympton St.
David McKendree Key - United States Ambassador, served under at least six U. S. Presidents from Warren G. Harding to Dwight D. Eisenhower.
Murray Taylor - Composer of "Ten Thousand Men of Harvard"
- Cambridge Historical Commission, "City of Cambridge, Landmarks and Other Protected Properties" Archived 2010-06-05 at the Wayback Machine., 2009.
- G. Edward White, Justice Oliver Wendell Holmes: Law and the Inner Self New York: Oxford University Press, 1993. Pp. ix, 628.
- A.D. Club, . The A.D. Club Of Harvard University, 1837-1889 (1889). Kessinger Publishing, 2009.
- "A.D. CLUB, INC. Summary Screen", The Commonwealth Of Massachusetts, William Francis Galvin, Secretary Of The Commonwealth, Corporations Division