Dictionary of American biography
Charles Scribner's Sons , 1981
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Concise dictionary of American biography
Charles Scribner's Sons, 1964
 Buku Referensi
Concise Dictionary of American biography
editor Joseph G. E.Hopkins
Charles Scribner's Sons, 1964
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Miller, William
Readings in american values : selected and edited from public documents of the american past
Prentice-Hall, 1964
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Plano, Jack C.
The American political dictionary
Holt, Rinehart and Winston, 1985
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