Tammany Hall
Although Waterbury left Tammany Hall after William M. Tweed became the boss, he defended Tweed at his trial following the fall of the "Tweed Ring". After Tweed's fall, Waterbury returned to Tammany Hall, but left again in 1875 disagreeing with John Kelly. Waterbury returned to Tammany Hall in 1890, being an admirer of Richard Croker and Mayor Thomas F. Gilroy.