Title: Small Blue Planet
Description: User-controlled magnifier moves over a map of the U.S. at 40,000 ft., allowing user to zoom in for a close-up look at 39 major U.S. cities, compare aerial photos with street maps, look up city histories, obtain current statistics, take notes, cut and paste images, measure distances, and more. High altitude photographs are from the National Aerial Photography Program.
Subjects: Cities and towns, Maps, Aerial photographs