The Encyclopedia of American facts and dates
editor, Gorton Carruth
Thomas Y. Growell, 1962
 Buku Referensi
Kull, Irving S.
A short chronology of AMerican history 1492-1950 / by Irving S. Kull
Rutgers University, 1952
 Buku Teks
Hudson, Robert V., author
Mass media : a chronological encyclopedia of television, radio, motion pictures, magazines, newspapers, and books in the United States
Garland publishing, 1987
 Buku Referensi
Encyclopedia of American history : erlarged and update
edited by Richard B. Morris
Harper and Row , 1965
 Buku Referensi
Chronicle of America.
ECAM Publications, 1989
 Buku Teks
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