Columbia subject headings:
Collective settlements--United States--History--20th century.
Spirit Fruit Society--History.
Utopias--History--20th century.
Harvard subject headings:
Collective settlements--United States--History--20th century.
Spirit Fruit Society--History.
Utopias--History--20th century
Princeton subject headings:
Collective settlements--United States--History--20th century.
Spirit Fruit Society--History.
Utopias--History--20th century.