In the butter, saute onion, 1 can of chopped artichoke hearts, mushrooms,celery, parsley, green onion tops and seasonings for 10 minutes, stirring often. In a large pan, combine mushroom soup and Half and Half. Add onion-artichoke mixture and simmer over low heat for 30 minutes. Add quartered artichoke hearts, oysters and gumbo file and continue to heat for 10 more minutes. Yield: 6 to 8 servings. MARY LORRAINE WYATT (MRS. GEORGE COX) From , by the Little Rock (AR) Junior League. Downloaded from G Internet, G Internet.