You are there, at the fabled Exposition des Arts Decoratifs et Industriels Modernes, cynosure of designers and premiere showcase of Art Deco. It was underwritten by the French government as a ""financial stimulus to the output of the nationally owned factories and an expression of national pride and renewed vigor""; and in the French sections were many sumptuously decorated pavilions--some publicly, some commercially sponsored-whose exteriors and interiors are pictured. Here reigned the art of ensemble-""the concept of composition applied to the arrangement of the interior spaces of a building."" But on the same site was the structure that exemplified the austere wave of the future, Le Corbusier's Pavillon de l'Esprit Nouveau. Still other crosscurrents were represented by the British, Italian, Dutch, Russian, etc. buildings. Fuzzy photos, a graceless text, but an unmistakable whiff of art history-in-the-making.