1. Wilbur Zelinsky,The Cultural Geography of the United States(Englewood Cliffs, N.J.: Prentice-Hall, 1973), p. 100.
2. Wilbur Zelinsky, “The New England Connecting Barn,”Geographical Review, 48 (October, 1958), pp. 540–553.
3. Henry Glassie,Pattern in the Material Folk Culture of the Eastern United States(Philadelphia: University of Pennsylvania Press, 1968). pp. 60–64, 88–92, 133–141, 145–149.
4. Charles F. Calkins,The Barn as an Element in the Cultural Landscape of North America: A Bibliography(Monticello, Illinois: Vance Bibliographies, September 1979), A-84; Alvar W. Carlson, “Bibliography on Barns in the United States and Canada,”Pioneer America, 10 (June, 1978), pp. 65–71.
5. John Fraser Hart,The Look of the Land(Englewood Cliffs, N.J.: Prentice-Hall, 1975), p. 123.