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An estimated 200,000 to 300,000 people from across the country gathered at the Lincoln Memorial for the March on Washington on Aug. 28, 1963. (AP Photo)
You can put your stamp on history as the country commemorates the 50th anniversary of the March on Washington.
The U.S. Postal Service will unveil a limited edition stamp on Friday, and they want you to be a part of that unveiling. All you have to do is add your Facebook or Twitter profile picture to the virtual mosaic to unveil a portion of the stamp's image.
The forever stamp will show marchers holding placards calling for equal rights and jobs for all in front of the Washington Monument.
The stamp will be revealed at the Newseum, located at 555 Pennsylvania Ave NW, at 10:30 a.m. Friday. Attendance is free and open to the public.