Organic Act. National Park Service. [2008-04-05]. (原始内容存档于2012-01-22). Albright, Horace M. as told to Robert Cahn; The Birth of the National Park Service;
78-84. online (页面存档备份,存于互联网档案馆) Swain, Donald C. "Harold Ickes, Horace Albright, and the Hundred Days: A Study in Conservation Administration." Pacific