islands of the United States Lists of landforms of the United States List of North American deserts List of snowiest places in the United States by state Protected areas of the United States Public Land Survey System Territorial evolution of the United States Regions Historic regions of the United States List of regions of the United States Mountains List of mountain peaks of the United States List of mountains of the United States Notes References Further reading Brown, Ralph Hall, Historical Geography of the United States, New York : Harcourt, Brace, 1948 Stein, Mark, How the States Got Their Shapes, New York : Smithsonian Books/Collins, 2008. External links USGS: Tapestry of Time and Terrain United States Geological Survey – Maintains free aerial maps National Atlas of the United States of America US Map