cause of the blue tonality of Picasso's paintings were a time of frequent changes of residence between Barcelona and Paris. During this period, he would spend his days in Paris studying the masterworks at the Louvre and his nights enjoying the company of fellow artists at cabarets like the Lapin Agile. 1905 and 1906 marked a radical change in color and mood for Picasso. He became fascinated with the acrobats, clowns and wandering families of the circus world. He started to paint in subtle pinks and grays, often highlighted with brighter tones. This was known as his "rose period." In 1907, Picasso painted "Les Demoiselles d'Avignon," considered the watershed picture of the twentieth century, and met Georges Braque, the other leading figure of the Cubist movement. Cubism was equally the creation of Picasso and Braque and from 1911 to 1913, the two men were in frequent contact. In 1917, Picasso did the set and costume design for Serge Diaghilev's ballet "Parade." For Picasso the 1920's were years of rich artistic exploration and great productivity. Picasso continued to design theater sets and painted in Cubist, Classical and Surreal modes. From 1929 to 1931, he pioneered wrought iron sculpture with his old friend Julio Gonzalez. In the early 1930's, Picasso did a large quantity of graphic illustrations. In late April of 1937, the world learned the shocking news of the saturation bombing of the civilian target of Guernica, Spain by the Nazi Luftwaffe. Picasso responded with his great anti-war painting, "Guernica." During World War II, Picasso lived in Paris, where he turned his energy to the art of ceramics. From 1947 to 1950, he pursued new methods of lithography. The l950's saw the beginning of a number of large retrospective exhibits of his works. During this time he began to a paint a series of works conceived as free variations on old master paintings. In the 1960's, he produced a monumental 50-foot sculpture for the Chicago Civic Cent...
