The U.S. Postal Service is honoring 10 leaders from the Underground Railroad on new Forever stamps, which are being unveiled in a Saturday ceremony in Dorchester County. Many leaders of the Underground Railroad, the secret network of those escaping slavery and those who assisted them, remained anonymous. But the figures being honored on the stamp include Catharine Coffin, Frederick Douglass, Thomas Garrett, Laura Haviland, Lewis Hayden, Harriet Jacobs, William Lambert, the Rev. Jermain Loguen, William Still and Harriet Tubman.