Columbia subject headings:
Evangelical Congregational Society (Pepperell, Mass.)
Pepperell (Mass.)
Unitarian Churches in the United States (Pepperell, Mass.)
Harvard subject headings:
Congregationalism.
Evangelical Congregational Socbiety (Pepperell, Mass.)--History.
First Parish in Pepperell (Pepperell, Mass.)--History.
Pepperell (Mass.)--Church history.
Princeton subject headings: