The first national unveiling ceremonies for a commemorative U.S. Postal Service stamp honoring civil rights icon Rosa Parks, will be held in Detroit and Dearborn, Mich., on Feb. 4.

Events at the Charles H. Wright Museum of African American History in Detroit and the Henry Ford Museum in Dearborn are expected to draw large crowds, including stamp collectors from around the country, on what would have been Parks’ 100th birthday.

The first Rosa Parks Forever stamps will be sold at the Wright museum, with a dedication ceremony starting at 7:30.a.m. The Henry Ford Museum, where the Rosa Parks bus is on permanent display, will host the First-Day-of-Issue stamp event at 10:45 a.m., as part of a daylong celebration dubbed the National Day of Courage.

Parks made history on Dec. 1, 1955, by refusing to give up her seat to a White man on a Montgomery, Ala., bus — an act that spurred a movement to end legally sanctioned racial discrimination. She and her husband Raymond moved to Detroit in 1957.