Lewis and Clark's lost necklace.

• Position: Americana

A rare Indian artifact from Lewis and Clark's fabled exploration of the American West turned up recently, after disappearing for more than a century. The bearclaw necklace, probably given to Meriwether Lewis and William Clark by an Indian chief during a diplomatic exchange, was last seen shortly after Harvard University's Peabody Museum first catalogued it in 1899. President Thomas Jefferson dispatched Lewis and CIark to explore and map the uncharted Louisiana and Oregon territories in 1804. During a two-year expedition, they met Indian tribes...