The 45th stamp in the Black Heritage series honors sculptor Edmonia Lewis (circa 1844-1907). As the first African American and Native American sculptor to achieve international recognition, Lewis challenged social barriers and assumptions about artists in mid-19th century America. The stamp art is a casein-on-wood portrait of Lewis, based on a photograph taken in Boston between 1864 and 1871 But there was much more to Silverstein’s versatility. From Wikipidia, just a few of many works: “his cartoons appeared in issues of Playboy from 1957 through the mid-1970s; Uncle Shelby's ABZ Book (1961), his first book [was] of new, original material for adults; Silverstein also wrote Cash’s biggest hit, ‘A Boy Named Sue’ [and] lyrics and music for most of the Dr. Hook & the Medicine Show songs on their first few albums; Silverstein had a popular following on Dr. Demento's radio show; wrote more than 100 one-act plays.”