Murphy, Paul L. (NHC Fellow, 1981–82). The Constitution in the Twentieth Century. Bicentennial Essays on the Constitution. Washington, D.C.: American Historical Association, 1986. ISBN 0872290360.
Murphy, Paul L. (NHC Fellow, 1981–82). The Constitution in the Twentieth Century. Bicentennial Essays on the Constitution. Washington, D.C.: American Historical Association, 1986. ISBN 0872290360.