Today is the release date for the John H Johnson stamp. Mr. Johnson is the 35th person to be honored on the Black Heritage stamp series.
For more about John H Johnson you can take a look at his Wiki page here.
If you are curious like I am, you can also take a look at the Ebony Society of Philatelic Events and Reflections site to see all the stamps issued in this series. Harriet Tubman was the first to be featured in this series followed by Martin Luther King Jr. It is interesting to see how the look of the stamps have changed over time.