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Mexico and its heritage
Gruening, Ernest, (1928)
Anatomy of an undeclared war. Congressional Conference on the Pentagon Papers, Washington D. C., July 1971
Krause, Patricia A., (1972)
Study mission to Eastern (American) Samoa; report of Senators Oren E. Long, of Hawaii, and Ernest Gruening, of Alaska, to the Committee on Interior and Insular Affairs, United States Senate, pursuant to S. Res. 330, 86th Congress
Long, Oren Ethelbert, (1961)