The Corcoran Gallery of Art’s board of trustees will announce Monday that it will distribute almost 11,000 works remaining in its renowned collection, a historic giveaway that includes paintings by Washington Color School artist Sam Gilliam, photographs by Ansel Adams and Dorothea Lange, and prints by 19th-century French master Honoré Daumier.  Almost 9,000 pieces will go to the American University (DC) Museum at the Katzen Arts Center, with others headed to 10 Smithsonian Institution museums, several universities and the U.S. Supreme Court.