Annie Hoek-Wallach, a German Jewish immigrant; lived in the Netherlands during the Nazi era. Her mother and husband, a Dutch Jewish teacher, were deported to concentration camps where they perished.
Papers of Annie Hoek-Wallach, c 1943, 1987, notably include an illustrated book entitled Ha-ha, Ja ja written and illustrated by Annie Hoek-Wallach, dedicated to her husband, Dr. Henri Hoek, c 1943; notes documenting the lives of Annie and Henri Hoek, placing the illustrated book Ha ha Ja ja in context, undated, and a possibly incomplete, taped interview with Annie Hoek-Wallach, 1987.
(In: Institute of Contemporary History and Wiener Library in London, UK).
Source: http://www.aim25.ac.uk/cgi-bin/vcdf/detail?coll_id=8413&inst_id=104&nv1=search&nv2=