WIA GC 1930/1451 | Bing, Gertrud to Hermanin, Federico 25/02/1930 | Otto Härtzsch, a student of history of art at Hamburg University will come to Rome, could help... |
WIA GC 1930/1452 | Bing, Gertrud to Hermanin, Federico 25/02/1930 | Jan Lauts, a student of history of art, well known to the KBW will come to Rome, could help him... |