THE PORTLAND MUSEUM OF ART opens its summer blockbuster today, “American Moderns: Masterworks on Paper from the Wadsworth Atheneum Museum, 1910-1960.”

THE EXHIBITION of mostly watercolors includes many key paintings and graphic work from Edward Hopper, John Marin and other giants of American modernism. The show is on view through Sept. 12. For more information, call 775-6148 or go to www.portlandmuseum.org.