[From familiar to recent correspondents - on Hauptmann's correspondence].
D000422:Alchemy; D015709:Correspondence as Topic / Q000266:history*; D034462:Dissent and Disputes / Q000266:history*; D005858:Germany; D049668:History, 15th Century; D049670:History, 17th Century; D010811:Natural Science Disciplines / Q000266:history*; D009671:Nostrums / Q000266:history*; D010686:Philosophy, Medical / Q000266:history*
D009671:Nostrums