Star Spangled Banner 15 Stars & Stripes 1776 American USA Colonial Flag 3x5 CottonStar Spangled Banner 15 Stars & Stripes 1776 American USA Colonial Flag 3x5 Cotton Real Brass Grommets Gift Boxed The Lewis and Clark Expedition, also known as the Corps of Discovery Expedition, was the United States expedition to cross the newly acquired western portion of the country after the Louisiana Purchase. The Corps of Discovery was a select group of U. S. Army and civilian volunteers under the command of Captain Meriwether Lewis and his