WIA GC 1930/394 | KBW to Boysen, [Christian] 23/07/1930 | |
WIA GC/11947 | Warburg, Aby to Boysen, Christian 28/08/1913 | accepts what Boysen has written, that when selling English books he will charge Warburg the same... |
WIA GC/12371 | Warburg, Aby to Hauber, Anton 15/12/1916 | he will forward a cheque to his bank in Ulm; requests seven copies [of Hauber's book] to be sent... |
WIA GC/12517 | Warburg, Aby to Boysen, Christian 15/01/1920 | as a client for many years, Warburg requests that the bookdealer does not demand the full 20... |
WIA GC/12518 | Saxl, Fritz to Boysen, Christian 11/02/1920 | on a book order, [Felix] Stähelin, Basler Portraits, which has become too expensive so that... |