WASHINGTON, Aug. 13 -- The Library of Congress issued the following news: * * * Fall Tour Dates Announced for National Ambassador for Young People's Literature Mac Barnett * National Ambassador for Young People's Literature Mac Barnett continues his national tour this fall, sharing his passion for picture books with children and adults alike through his initiative "Behold, the Picture Book! Let's Celebrate Stories We Can Feel, Hear, and See." Mac will visit Elkhart, Indiana; Greensboro, Nort  more