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Report of the Geological exploration of the fortieth parallel made by order of the Secretary of War according to the acts of Congress of March 2 1867 and March 3 1869under the direction of A A Humphreys chief of engineersConference Proceeding BookPublié 1870
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Official proceedings of the seventeenth National Irrigation CongressConference Proceeding BookPublié 1909
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Proceedings held at Seattle Washington May 18 19 and 20 1915 and at Portland Oregon September 22 1915Conference Proceeding BookPublié 1915
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Proceedings of the Outdoor Recreation Congress for the Pacific NorthwestApril 1 2 3 1964 Wenatchee WashingtonConference Proceeding BookPublié 1964
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Chart of the world shewing the tracks of the US Exploring Expeditionin 1838 39 40 41 & 42cartographic materialpar Wilkes, Charles, 1798-1877
Publié 1844 -
Brief account of the Lewis and Clark Expedition from St Louis Missouri to the mouth of the Columbia River Oregon and return 1804-1806with illustrative mapConference Proceeding BookPublié 1926
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Publié 1974