New York, 20.1.1944

Kilchberg/Zürich, 7.6.1957

New York, 22.4.1941

London, 27.9.1940

London, 24.9.1940

London, 16.9.1940

Charleston, 24.1.1940

o.O., 15.5.1937

o.O., 1.2.1937

New York, 2.12.1936

o.O., 2.6.1936

Prag, 6.2.1936

o.O., 29.1.1936

St. Gallen, 26.1.1936

Biel, 19.1.1936