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Map of Oregon and upper California from the surveys of John Charles Frémont and other authoritiescartographic materialby Frémont, John Charles, 1813-1890
Published 1848 -
Map of Oregon and upper California from the surveys of John Charles Fremont and other authoritiescartographic materialby Preuss, Charles, 1803-1854
Published 1848 -
Topographical map of the road from Missouri to Oregoncommencing at the mouth of the Kansas in the Missouri River and ending at the mouth of the Wallah Wallah in the Columbia;cartographic material
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Topographical map of the road from Missouri to Oregon commencing at the mouth of the Kansas in the Missouri River and ending at the mouth of the Wallah Wallah in the Columbiain VII sectionscartographic materialby Preuss, Charles, 1803-1854
Published 1849