WIA GC 1930/3048
KBW to Sigerist, Henry. E. 19/03/1930
WIA GC 1930/3049
KBW to Sigerist, Henry E. 26/03/1930
WIA GC 1930/3050
KBW to Sigerist, Henry E. 24/05/1930
WIA GC 1931/2803
Saxl, Fritz to Sigerist, Henry 16/03/1931
WIA GC 1931/2804
Sigerist, Henry to Saxl, Fritz 11/05/1931