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Struggle for Social Justice

The "I Have a Dream" speech commemorated on this stamp was a defining moment of the 1960s Civil Rights Movement.
Issued on September 17, 1999, the stamp shows Dr. Martin Luther King Jr. on the steps of the Lincoln Memorial at the August 28, 1963, "March on Washington for Jobs and Freedom." Hundreds of thousands of people surrounded the Reflecting Pool. Dr. King's speech calling for racial equality and an end to discrimination is regarded by many as one of the greatest speeches in human history.

Breast Cancer Research.
This is the first US stamp ever designed and used to raise money for a health issue.
The semi-postal stamp, which its bold call to action, was issued at a White House ceremony on July 29, 1998. Its purchase price includes a surcharge to support breast cancer research. The stamp's designer, Ethel Kessler, was a breast cancer survivor. Illustrator Whitney Sherman created the dramatic image of a mythical goddess of the hunt. As of 2013, the stamp had raised over $76 million for breast cancer research.
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