The Four Corners Economic Development Region, consisting of a 92-county area in Arizona, Colorado, New Mexico, and Utah, was established December 19, 1966, under Title V of the Public Works and Economic Development Act of 1965. On September 19, 1967 the Four Corners Regional Commission was created and charged with the responsibility of planning for the economic and social development of the Region. These actions, along with the establishment of six other economic regions and regional commissions within the nation came in response to the realization that residents of certain geographic areas were not fully benefiting from the American economic growth experience. It was also recognized that effective solutions to the problems of these economically depressed areas would depend upon adequate decision making, the quality of which is dependent on planning at the regional, state, and local levels.
State of Utah
Office of the State Planning Coordinator. (1969). Utah State preliminary development plan. State of Utah.