Presidential Timeline of the 20th Century

"Twelve presidential libraries, spanning the Herbert Hoover to Bill Clinton administrations, have teamed up to create the Presidential Timeline of the 20th Century, a multimedia online archive launched February 15. Spearheaded by the Lyndon Baines Johnson Library and Museum in Austin, Texas, the collaborative effort presents interactive timelines of each president's life that include documents, diaries, maps, photo galleries, audio recordings, video clips, and classroom projects for teachers"