One of the many gigantic concrete arrows dotting US from east to west. These arrows were created for wayfinding in the 1920s when coast-to-coast Airmail service began. Read story at CORE 77
One of the many gigantic concrete arrows dotting US from east to west. These arrows were created for wayfinding in the 1920s when coast-to-coast Airmail service began. Read story at CORE 77