The 150th anniversary of Lincoln's signing of the Emancipation Proclamation, aka the document that freed the slaves, will be commemorated with a new Forever Stamp issued by the USPS in 2013. This is the third time the document has been noted on U.S. postage, including 1940's thirteenth amendment stamp and 1963's centennial commemorative.
To mark the release of the new regular issue four cent Lincoln stamp at the sixth National Postage Stamp Show in 1954, the proclamation itself was exhibited after being unveiled by Hulan E. Jack, the first person of color to be elected Manhattan Borough President.
The new stamp is the product of a collaboration of art director Antonio Alcalá and graphic designer Gail Anderson.
Stamp Image © USPS