1967 Original Vintage Montreal Poster, Expo 67, German Pavilion Jean D'Ylen Wikipedia states: The 1967 International

Wikipedia states: The 1967 International and Universal Exposition or Expo 67

He studied at the  Art Institute of Naples (Italy)

This calendar designed by Jules Cheret was printed by Chaix (the same printer of the Maitres de L'Affiches series) and dates from 1889

he considers himself a historical painter working with abstract subject matter

Louis Charles Boileau

1967 Original Vintage Montreal Poster, Expo 67, German Pavilion Jean D'Ylen Wikipedia states: The 1967 InternationalDate: 1967 Size: 23. 5 x 35. 75 inches Artist: designed by Harsh Finegold, Inc. Of Expo 67, Wikipedia states: The 1967 International and Universal Exposition or Expo 67, as it was commonly known, was the general exhibition, Category One World's Fair held in Montreal, Quebec, Canada from April 27 to October 29, 1967. It was considered to be the most successful World's Fair of the 20th century, with the most attendees (50 million visits) to that date