Various organizations and periodicals gave the movement shape. The earliest was the so-called "Transcendental Club" (1836–1840), an informal group that met to discuss intellectual and religious topics; also important was the "Saturday Club," organized much later (1854). Many transcendentalists participated in the utopian communities of Brook Farm (1841–1848; located in West Roxbury, Massachusetts), founded by George Ripley (1802–1880) and his wife, Sophia Dana Ripley (1803–1861), and the short-lived Fruitlands (1843–1844; located in Harvard, Massachusetts), founded by Alcott. A number of transcendentalist ministers established experimental churches to give their religious ideas institutional form. The most important of these churches were three in Boston: Orestes Brownson's Society for Christian Union and Progress (1836–1841); the Church of the Disciples (founded 1841), pastored by James Freeman Clarke (1810–1888); and Theodore Parker's Twenty-Eighth Congregational Society (founded 1845–1846). The most famous transcendentalist magazine was the Dial (1840–1844), edited by Fuller and then by Emerson; other major periodicals associated with the movement included the Boston Quarterly Review (1838–1842), edited by Brownson, and the Massachusetts Quarterly Review (1847–1850), edited by Parker.
Transcendentalism emerged from Unitarianism, or