Map of the Oregon Territory / by the U.S. Ex. Ex., Charles Wilkes, 1841.Wilkes, Charles, 1798-1877[1845]Annotated in color ink to show boundaries, and dissected and mounted on linen.Appears in the author's Narrative of the United States Exploring Expedition ... 1845.Includes inset of "Columbia River, reduced from a survey made by the U.S. Ex. Ex., 1841" and text.Relief shown by hachures.cartographic