Keywords: GrandCanyonRescueHelicopter1978.jpg This article or image contains material based on a work of a National Park Service employee created during the course of the person's official duties As a work of the U S federal government such work is in the public domain See the NPS website http //www nps gov/ and NPS copyright policy http //www nps gov/disclaimer htm for more information w Grand Canyon rescue helicopter circa 1978 source http //home nps gov/applications/hafe/hfc/npsphoto4h cfm Catalog_No hpc 2D001583 PD-USGov Bell 206 |