Washington, Village and Capital par Constance McLaughlin Green (1963) TheGreenbackEra par Irwin Unger (1965) Machiavelli in Hell par Sebastian de Grazia
History of the American Presidential Elections, New York, Frederick Ungar, 1963 (OCLC 500975, lire en ligne). (en) Irwin Unger, TheGreenbackEra : A Social
McLaughlin Green 1964 : Puritan Village: The Formation of a New England Town de Sumner Chilton Powell 1965 : TheGreenbackEra, a social and political history