In January 1939, Pablo Picasso was renowned in Europe but disdained by many in the United States. One year later, Americans across the country were clamoring to see his art. How did the controversial leader of the Paris avant-garde break through to the heart of American culture?

The answer begins a generation earlier, when a renegade Irish American lawyer named John Quinn set out to build the greatest collection of Picassos in existence. His dream of a museum to house them died with him, until it was rediscovered by Alfred H. Barr, Jr., a cultural visionary who, at the age of twenty-seven, became the director of New York Picasso's War: How Modern Art Came to America