WereMaurice Elvey and Arthur Lubin both from the USA?
Maurice Elvey Maurice Elvey (11 November 1887 – 28 August 1967) was the most prolific film director in British history. He directed nearly 200 films between 1913 and 1957. During the silent film era he directed as many as twenty films per year. He also produced more than fifty films - his own as well as films directed by others.
Arthur Lidov Arthur Hershel Lidov (June 14,1917–December 29,1990) was an artist, illustrator, muralist, sculptor and inventor. Besides serving many national advertisers, he contributed his artistic expression to Life, Time, Fortune, The Saturday Evening Post and other general and special-interest magazines.