Keywords: Disability2.png en A collection of pictograms Three of them used by the United States National Park Service A package containing those three and all NPS symbols is available at the http //openiconlibrary sourceforge net/ Open Icon Library http //www nps gov/hfc/carto/map-symbols htm NPS Graphics put together by User Wcommons Three of the separate icons originally created July 2006 this image created Jan 2011 PD-USGov-NPS 100px 100px 100px 75px PD-USGov Accessibility symbols Symbols of impairment combined |