1. A map of Lewis and Clark's track across the western portion of North America, from the Mississippi to the Pacific Ocean : by order of the executive of the United States in 1804, 5 & 6 Yale Public content 1814. 2002-06-01T04:00:00Z. 2017-07-04T21:13:50Z. Lewis, Samuel, 1753 or 1754-1822. Longman, Hurst, Rees, Orme & Brown. English. Public. Northwestern States.