The experimental character of Stockholm's renowned Modern art museum, the Moderna Museet, was formed in the late 1950s and early 60s, with influences coming primarily from Paris and New York. To mark the museum's fiftieth anniversary this year, three exhibitions focus on other creative hubs--Rio, Milan-Turin and Los Angeles--during that exciting period. Three volumes, available singly or in a 3-volume, slipcased edition, are definitive resources on...