Subseries 3: Notes, 1948-1973 0.15 cubic ft.
This subseries consists of research notes that Oppler wrote after his retirement; newspaper clippings, among them a 1948 issue of the Pacific Stars and Stripes, are sometimes interspersed. Some of Oppler's research may have been undertaken in preparation for the writing of Legal Reform in Occupied Japan: A Participant Looks Back, but some of the notes concern German and American law, society, and politics.