Harlow, Ralph Volney, author
The United States : from wilderness to world power
Holt, Rinehart and Winston, 1961
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Barnow, Erik
A history of broadcasting in the United States/ Erik Barnouw
Oxford Univ. Press, 1970
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Parkes, Henry Bamford
United States of America : a history / Henry Bamford Parkes
Alfred A. Knoft, 1968.
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Risjord, Norman K., author
America a history of the United States/Norman K.Risjord
Prentice-Hall, 1985
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Cassara, Ernestt, author
History of the United States of America: a guide to information sources
Gale Research Coompany, 1977
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