The US Postal Service has released a stamp honoring Rosa Parks on what would have been her 100th birthday, and in turn her historic bus ride. She boarded the Montgomery bus on December 1, 1955, as part of Martin Luther King, Jr. famous bus boycotts. You can see the bus at the Henry Ford Museum in Dearborn, Michigan. The stamp was first issued in Detroit, which she eventually made her home. Interesting that there is no denomination on the stamp, but I assume it covers the domestic mail rate.