By Roady, Elston Edward.
Princeton, N.J. Citizens' Research Foundation 1969 .
40 p. 23 cm..

By Holt, Laurence James..
Cambridge, Mass Harvard University Press 1967 .
viii, 188 p.

By Moos, Malcolm Charles.
New York Random House 1956 .
564 p. 22 cm..

By Myers, William Starr.
New York | London The Century Co. 1931 .
517 p.

Philadelphia Dunlap Printing Co. 1900 .
191 p.

By Mayer, George H..
New York Oxford University Press 1964 .
ix, 563 p.

By Novak, Rovert D..
New York The Macmillan 1965 .
469 p.

Washington Congressional Quarterly Service 1968 .
v, 291 p. , 920702

By Baringer, William E..
Boston Little, Brown 1937 .
xi, 373 p.