Who directed 'How Green Was My Valley', the Best Picture winner for 1941?

Who directed 'You Can't Take It with You', the Best Picture winner for 1938? Which film won the Academy Award for Best Picture for 1940? Who directed 'Rebecca', the Best Picture winner for 1940? Which film won the Academy Award for Best Picture for 1941? Which film won the Academy Award for Best Picture for 1942? Who directed 'Mrs. Miniver', the Best Picture winner for 1942? Which film won the Academy Award for Best Picture for 1944? Who directed 'Going My Way', the Best Picture winner for 1944?