"Famous explorer of the Colorado River, John Wesley Powell left the American southwest with a rich legacy. During his expeditions he compiled data and a number of sketches describing the landscape. This collection contains various writings and geographical publications to which Powell contributed."
including a reconnoissance of a new route through the Rocky mountains. By Howard Stansbury, captain, Corps of topographical engineers, U. S. Army. Printed by order of House of representatives of the United States.
comprising a voyage from St. Louis, on the Mississippi, to the source of that river, and a journey through the interior of Louisiana, and the north-eastern provinces of New Spain. Performed in the years 1805, 1806, 1807, by order of the government of the United States.