(Paris, 1937, Editions Art & Architecture), 4 uniform half cloth publisher's portfolios, 33 x 23 cm, each containing one leaf with on one side the introduction and on the other side the index + 48 b/w photo plates with printed captions, loose as issued in the original half cloth portfolio printed in silver-red-blue. Very well preserved. Important iconographic publication on the 1937 Paris World Exposition. The map Régionalisme and the map Section Étrangères have also a separate title-leaf. These were probably never issued for the two other maps.