Ọhịa Mba Whitman

E hiwere Whitman National Forest na Oregon na Julaị 1, 1908 jiri 1,234,020 acres (4,993.9 km2) sitere na akụkụ nke oke ọhịa Blue Mountains.  Na June 20, 1920 akụkụ nke Minam National Forest ka agbakwunyere.  Na 1954, ejikọtara ya na Wallowa National Forest iji mee Wallowa–Whitman National Forest.[1]  N'ịgbadata mpaghara oke ọhịa, Whitman National Forest dị na mpaghara Baker, Union, Grant, Wallowa, Umatilla na Malheur.[2]  Enwere ụlọ ọrụ mpaghara mpaghara na Baker City, Halfway, na ịdị n'otu.[3]  Isi ụlọ ọrụ nchịkwa ya dị na Baker City, dịka akụkụ nke Wallowa-Whitman National Forest.  Ruo Septemba 30, 2008, Whitman nwere mpaghara 1,266,902 acres (5,126.97 km2), na-anọchi anya 55.96% nke oke ọhịa 2,263,965 acres (9,161.94 km2).

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 Ọgbakọ History Society
 Ndepụta nke oke ọhịa nke United States na ụbọchị ha (site na weebụsaịtị Forest History Society ) Ederede sitere na Davis, Richard C., ed. Encyclopedia of American Forest and Conservation History. New York: Ụlọ ọrụ mbipụta Macmillan maka Forest History Society, 1983. Vol. II, p. 743–788 .