1921 - 2001, 1969-1987 Prof. an der University of Arizona
1898 - 1961, Filmproduzent
1984 - ,
1936 - 2017, Prof. für Government and Politics, Univ. of Maryland; Center for Comparative Politics, Univ. of Colorado (1987)
1919 - 1994,
1988 - ,
1954 - ,
1942 - ,
1921 - 1952,
1914 - 2007,