The way public health insurance funds dealt with their records, such as member and benefit cards, after the war differed widely. The company health insurance fund of the Trüller factory in Celle handed over the cards of insured civilian laborers directly to the International Tracing Service (ITS), the predecessor institution of the Arolsen Archives, in 1950. The company health insurance fund of Osthannoversche Eisenbahnen AG stated on the other hand that all of its records had been lost in 1945.