This is a 4-way archival folder with 17 large maps (18" x 13") and Annotated Cartobibliography. All of the maps date from the time of the Lewis & Clark Expedition to the west coast of North America. The maps are printed on Archival quality paper in 2 or 4-colors. The maps are aimed at Educators or anyone with a high degree of interest in the exploration of North America. The maps are all accurate reproductions of period maps.