As of 2015, the American Library Association maintains a comprehensive list of Caldecott Medal and Honor award winners. The list covers winners from the award's foundation in 1938 to the present day. The ALA maintains this list through its Association for Library Service to Children division.
The 2015 Caldecott Medal was awarded to "The Adventures of Beekle: The Unimaginary Friend," written and illustrated by Dan Santat. This picture book uses vivid illustrations to tell the story of an imaginary friend searching for his human. 2015 Caldecott Honor Books include "Nana in the City," written and illustrated by Lauren Castillo; "Sam & Dave Dig a Hole," illustrated by Jon Klassen and written by Mac Barnett; and "This One Summer," illustrated by Jillian Tamaki and written by Mariko Tamaki.
The ALA awards the Caldecott Medal to illustrators of outstanding American picture books for children. Named after illustrator Randolph Caldecott, the annual award serves as a counterpoint to the association's Newbery Medal, which honors writers of distinguished children's books. To be eligible for a Caldecott, an artist must be a resident of the United States. Individuals who wish to be considered for the award should mail copies of their books to the ALSC office and the chairperson of the Caldecott awards committee. The award celebrated its 75th anniversary in 2013.