Keywords: Conrad L. Wirth.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 Photo of w Conrad L Wirth Quadzilla99 04 15 14 February 2007 UTC source http //home nps gov/applications/hafe/hfc/npsphoto4h cfm Catalog_No hpc 2D001134 PD-USGov 1899 births 1993 deaths Directors of the National Park Service |