found: Vatikanische Akten zur Geschichte des Deutschen Kulturkampfes. Teil 1, 1970:title page (im Auftrag des Deutschen Historischen Instituts in Rom bearbeitet von Rudolf Lill)
found: Machtverfall und Machtergreifung : Aufstieg und Herrschaft des Nationalsozialismus, 1983:title page (Lill [co-editor]) page 9 (Dr. Rudolf Lill; born 1934; professor of modern history at the Universität Passau)
found: Immagini a confronto, Italia e Germania, 1991:title page (Rudolf Lill) spine (R. Lill)
found: German Wikipedia, viewed July 24, 2020(Rudolf Lill; born October 12, 1934, in Cologne; died July 18, 2020; German historian of the modern era; his scholarship often focused on the history of Italy; obtained his doctorate at Cologne in 1962; he taught in Cologne from 1974 to 1979, in Passau from 1979 to 1983, and in Karlsruhe from 1983 to 1993 and again from 1996 to 2000)
found: Deutsche Nationalbibliothek online catalog, viewed July 24, 2020(authorized access point: Lill, Rudolf; other data in authority record: German historian; born 1934; died 2020) - http://d-nb.info/gnd/121774775
