Visual material for this site was taken from private sources as well as the the public domain, including the National Archives and Records Administration (NARA) for the historical imagery.

The images from left to right are:

• Abraham Lincoln Memorial, Washington, D.C.
• Holocaust Memorial, Berlin
• Civil Rights March on Washington, D.C., August 28, 1963
• Richard M. Nixon at the National Association of Realtors convention
  in Washington D.C., November 15, 1973
• Marx and Engels Memorial / TV Tower, Berlin
• Civil Rights March on Washington, D.C., August 28, 1963

This website can also contain images from fotolia and photocase.