The significance of the frontier in American history / F.J. Turner -- Contributions of the West to American democracy / F.J. Turner -- Sections or classes? / L.M. Hacker -- Political institutions and the frontier / B.F. Wright, Jr. -- The frontier and American institutions : a criticism of the Turner theory / G.W. Pierson -- The American frontier : frontier of what? / C.J.H. Hayes -- Frederick Jackson Turner / A. Craven -- The frontier and the 400 year boom / W.P. Webb -- A meaning for Turner's frontier : democracy in the Old Northwest / S. Elkins and E. McKitrick -- Frontier democracy : social aspects / R.A. Billington -- Suggestions for additional reading (p. 185-188).