K. Roth 2003 The development of The National Map is "national" in the broadest sense of the word. Although the U.S. Geological Survey is taking the lead, local governments, states, and regions are active and essential partners in the process, contributing, for example, data updates, problem-solving data integration, and map development from multiple data layers. application/pdf 10.1559/152304003100011027 en Initial implementation of The National Map article