Five great American museums have pooled their outstanding works to create an unequaled survey of art in the United States from prehistory to the present day, a glorious treasury of American creativity. It follows many of the strands that have been woven into the pattern of American society, its cultural richness springing from the diversity of its citizenry. Here are masterpieces of painting, sculpture, photography, crafts, and the decorative arts from The Carnegie Museum of Art, Pittsburgh; The Minneapolis Institute of Arts; The Nelson-Atkins Museum of Art, Kansas City, Missouri; The Saint Louis Art Museum; and The Toledo Museum of Art.