Caldecott Medal
The award is named for Randolph Caldecott, a nineteenth-century English illustrator. Rene Paul Chambellan designed the Medal in 1937. The obverse scene is derived from Randolph Caldecott's front cover illustration for "The Diverting History of John Gilpin" (Routledge, 1878, an edition of the 1782 poem by William Cowper), which depicts Gilpin astride a runaway horse. The reverse is based on "Four and twenty blackbirds baked in a pie", one of Caldecott's illustrations for the nursery rhyme "Sing a Song of Sixpence".
John Rocco
Rocco was a runner-up for the American Library Association Caldecott Medal, which annually recognizes the best in U.S. children's picture book illustration, when "Blackout" was named a Caldecott Honor Book in 2012.Another artist illustrated the first edition dustjacket for at least the first Camp Half-Blood novel by Rick Riordan, namely "The Lightning Thief". Before the end of the "Percy Jackson & the Olympians" subseries (2005 to 2009), all volumes were in print with stylistically matching dustjackets illustrated by Rocco. New cover illustrations from a single Rocco painting that spans all five books were introduced early in 2014.