Big Four From left, British Prime Minister David Lloyd George, Italian Prime Minister Vittorio Orlando, French Prime Minister Georges Clemenceau and U.S. President Woodrow Wilson -- the "Big Four" world leaders -- attend the Paris Peace Conference, May 27, 1919. Photo by Edward Jackson SHARE: Download: Full Size (1.7 MB) Tags: world war i Credit: Photo by Edward Jackson VIRIN: 170329-O-ZZ999-3316.JPG Photo Gallery