John Muir Exhibit: Includes a biography, chronology, articles by and about Muir, resources for teachers and students, and related information. From the Sierra Club, of which he was a founder

Martin Luther King, Jr., Research and Education Institute: Biography, encyclopedia of MLK's life, sermons, speeches, writings, and other materials from the Stanford University project to compile and publish MLK's papers, including school lesson plans and other classroom resources

Seattle Times: Martin Luther King, Jr.: In-depth biographical information created to mark the 70th anniversary of King's birth