----------------------------Original message---------------------------- Does anyone know of a map showing how many people live at sea level and then va rious increments of elevations above sea level? The patron wants this for the U S. I sort of picture this as a contour map for the whole country with some sor t of symbol for showing the population. Arlyn Sherwood Map Librarian Illinois State Library 217/782-5823 phone 217/782-4446 fax