Keywords: Pictograms-nps-misc-metro station.svg pictograms used by the United States National Park Service A package containing all NPS symbols is available at the http //openiconlibrary sourceforge net/ Open Icon Library http //www nps gov/hfc/carto/map-symbols htm Converted from PDF to SVG for the http //openiconlibrary sourceforge net/ Open Icon Library Originally created July 2006 converted Jan 1010 NPS Graphics converted by User ZyMOS PD-USGov-NPS Inverted and non-inverted pictograms available see category USNPS map symbols PD-USGov USNPS map symbols M metro Diagrams of railway symbols |