A year shy of Frederick Douglass’ 150th birthday the United States Postal Service released a postage stamp bearing his image. Back in February 1967 a postage stamp was 25 cents.
According to Sherrod Gresham, author of African Americans on U.S. Currency & Numismatic Materials: Coins and Medals, on April 7, 1940 Booker T. Washington became the first black person to be honored on a US postage stamp.
In 1995 Douglass was again honored with his own stamp as part of a series on the American Civil War.