WereMaurice Elvey and Arthur Lubin both from the USA?
Arthur Lubin Arthur Lubin (July 25, 1898 – May 12, 1995) was an American film director and producer who directed several "Abbott & Costello" films, "Phantom of the Opera" (1943), the "Francis the Talking Mule" series and created the talking-horse TV series "Mister Ed". A prominent director for Universal Pictures in the 1940s and 1950s, he is perhaps best known today as the man who gave Clint Eastwood his first contract in film.
Arthur Holch Arthur Everett Holch, Jr. [pronounced Holtsch] (March 13, 1924 – September 23, 2010) was an American television documentary filmmaker whose works in the early days of television covered controversial topics relating to race relations and political issues in the United States. Holch earned an Emmy Award for a 1991 documentary broadcast on HBO documenting the life of a German man who had been a member of the Hitler Youth and then turned against the Nazis.