When Chcago’s Terra Museum of American Art closes forever this Sunday, it will represent a major loss for the city’s art scene, but the Terra Foundation’s extensive collection will not simply be dispersed to the winds. “The entire collection is soon to be made available on the foundation’s new Web site, www.terraamericanart.org. And 50 of the major works, as well as the museum’s complete collection of 350 works on paper, will be temporarily loaned to the Art Institute of Chicago in January.”