Kull, Irving S.
A short chronology of AMerican history 1492-1950 / by Irving S. Kull
Rutgers University, 1952
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Hudson, Robert V.
Mass media : a chronological encyclopedia of television, radio, motion pictures, magazines, newspapers, and books in the United States
Garland publishing, 1987
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Encyclopedia of American history : erlarged and update
edited by Richard B. Morris
Harper and Row , 1965
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Chronicle of America.
ECAM Publications, 1989
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Paneth, Donald
The Encyclopedia of American journalism
Facts on File, 1983
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