Caenegem, R.C. van
Guide to the sources of medieval history
North-Holland Publishing, 1978
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Kemmerer, Donald L.
Economic history of the United States
Littlefield, Adams, 1956
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Williams, T. Harry
A history of the United States (to 1876)
Alfred A. Knopf, 1963
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Rae, John B.
The United States in World History
Mc Graw-Hill Book Company, 1949
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McLaughlin, Andrew C.
A constitutional history of the United States
Appleton Century Crofts, 1935
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