Yale University
Yale New Haven Teachers Institute: Utopian Communities, 1800 1890
This site is a lesson plan for students to follow for an assignment dealing with Utopian communities but it does include some background on some of the various Utopian communities of the 19th century.
Other
Nyhn: The Oneida Community
This site gives some background information about the Oneida Community. Also provides information about the founder, John Humphrey Noyes, and lists the "doctrines" of the community.