United States Holocaust Memorial Museum Collection, Gift of Mary Helen Schaeffer and Jeffrey Wallen The material was collected by Lt. Col. Philip W. Porter, a reporter (and later, columnist and editor) with the Cleveland Plain-Dealer, who worked as a press officer for the Air Force during World War II. Mary Helen Schaeffer and Jeffrey Wallen, Lt. Colonel Porter's daughter and son-in-law, donated this collection to the United States Holocaust Memorial Museum on Jan. 6, 2009. . was Dr. Wallen's father-in-law.