Map shows Russian Possessions, treat boundaries between United States and Spanish Possessions (1819) and British Possessions (1818), physical landmarks, "wagon road to Santa Fe," major settlements and forts. Includes image and note: "Facsimile of a Medal struck at Boston in 1787 on occasion of the departure of the vessels Columbia and Washington for the North West Coast of America...." Inset: The North Pacific Ocean and the adjacent coasts and islands. Relief shown by hachures. Scale not given.

Map of the Oregon Territory by the U.S. Exploring Expedition with Charles Wilkes as Commander.

Map shows geography and Native American habitation in mid-nineteenth century Oregon territory. Inset: "Columbia River, reduced from a survey." No scale indicated.

Map shows major physical features, areas of Indian habitation, major cities and towns; northern portion of map is labeled Oregon Territory, Missouri Territory, southern portion is Upper California and New Mexico; February 1848 treaty boundary line between Mexico and the United States. Includes notes and "explanations." Inset: "Profile of the travelling route from the South Pass of the the Rocky Mountains to the Bay of San Francisco." Relief shown by hachures and spot heights, and by profile. Scale [1:3,000,000].

Map shows historic routes of exploration, suggested routes of travel to California's Gold region, Oregon, areas of Native American habitation, and major cities. Includes text in lower panel: "Important directions to persons emigrating to California" and "Description of California, or the new gold region." Relief shown by hachures. Depths by soundings. Scale [ca. 1:6,000,000] and [ca. 1:40,000,000].