The U.S. Postal Service dedicated a set of 37-cent stamps commemorating milestones in the civil rights movement.
The set of 10, titled "To Form a More Perfect Union," includes stamps commemorating:
* The 1965 Selma, Ala., civil rights marches demanding voting rights;
* The Montgomery Bus Boycott, the 1955-56 protest against the segregated public transportation system in Montgomery, Ala.;
* The Greensboro, N.C., lunch counter sit-in, when a group of four black students refused to leave a lunch counter in 1960 after they had been denied service;
* Freedom Riders, men and women who traveled to the South to test the 1960 Supreme Court ruling outlawing racial segregation in interstate public transit;
* The Little Rock Nine, the African American students blocked from attending high school in Little Rock in 1957;
* The Civil Rights Act of 1964, which prohibited discrimination in public facilities, jobs and government;
* Brown v. Board of Education, the 1954 Supreme Court decision outlawing segregated public schools;
* Executive Order 9981, which integrated the armed forces in 1948;
* The March on Washington in 1963 in which thousands demonstrated for jobs and equality and Martin Luther King Jr. made his "I Have a Dream" speech;
* The Voting Rights Act of 1965, which outlawed literacy tests to vote and protected the voting rights of minorities.
Dedication ceremonies for the stamps were held in Greensboro, Little Rock, Montgomery, Selma, Topeka, Kan., and Washington. Ceremonies scheduled for Memphis and Jackson, Miss., were canceled because of Hurricane Katrina.
-- Associated Press