Archival Photo

A2011-001.1310 : Entrance of the Lewis and Clark Exposition

Thursday, June 1, 1905

Saturday, October 14, 1905

A2011-001

AP/87004

The Lewis and Clark Centennial Exposition, commonly also known as the Lewis and Clark Exposition, and officially known as the Lewis and Clark Centennial and American Pacific Exposition and Oriental Fair, was a worldwide exposition held in Portland, Oregon, United States in 1905 to celebrate the centennial of the Lewis and Clark Expedition. While not officially considered a World's Fair by the Bureau of International Expositions, it is often informally described as such; the exposition attracted both exhibits and visitors from around the world. During the exposition's four-month run, it attracted over 1.6 million visitors, and featured exhibits from 21 countries. Portland's population grew rapidly from 1905 - 1910 as a result of the Exposition.