The now-open Northwest Passage (top), extending from the Bering Strait at upper left, and John Everett Millais' <i>The Northwest Passage</i> (1874). (European Space Agency, Wikipedia)
Top: <i>Mount Jefferson, Oregon, 1891</i>, by Myra Albert Wiggins, part of the Western photography collection at the Portland Art Museum. Bottom: <i>Arrival of the Westerners</i>, Japanese, 17th century.