Benns, Lee F.
European history since 1870
Appleton-Century-Crofts, 1955
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Tostlebe, Alvin S.
Capital in agiculture its formation and financing since 1870 Alvin S. Tostlebe
Princenton University Press , 1957
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Hacker, Louis M.
The United States since 1865
Appleton-Century-Crofts, 1949
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Krout, John A.
United States Since 1865
Barnes & Noble, 1962
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Woytinsky, W.S.
World population and production trends and outlook
The Twentieth Century Fund, 1953
 Buku Teks