FRANCE
France 1967 - The 10th Anniversary of the Death of Robert Esnault-Pelterie
France 1966 - The 100th Anniversary of Paris Pneumatic Post
France 1969 - College of Arts and Manufactures, Chatenay-Malabry
France 1967 - The 3rd International Congress of European Broadcasting Union
France 1975-Regions of France, Nord-Pas-de-Calais
France 1966 -The 19th International Railway Congress, Paris