Overland Explorations of the Trans-Mississippi West
In 1528, the Spanish explorer Alvar Nunez Cabeza de Vaca and his three companions were shipwrecked and, looking for help, began an eight-year trek through the deserts of the American West. Over three centuries later, the four "Great Surveys" in the United States were consolidated into the U.S. Geological Survey.
The frontiers were the lands near or beyond the recognized international, nation...
In 1528, the Spanish explorer Alvar Nunez Cabeza de Vaca and his three companions were shipwrecked and, looking for help, began an eight-year trek through the deserts of the American West. Over three centuries later, the four "Great Surveys" in the United States were consolidated into the U.S. Geological Survey.
The frontiers were the lands near or beyond the recognized international, nation...
