To create the "Confluence of Civilizations" mural commissioned for the 1968 World's Fair in San Antonio, Texas, Juan O'Gorman collected natural stones from all over Mexico--twelve colors in all--field stones that the artist knew would never fade or change their hue. Juan O'Gorman: A Confluence of Civilizations follows the life of Juan O'Gorman and covers the creation of this spectacular piece of midcentury public art that stands the...