Fritz Ross started his career as junior partner at Ullstein AG in Berlin until 1934 (when the business, owned by the Jewish Ullstein family, was seized by the authorities and in 1937 renamed Deutscher Verlag. Ross founded an Ullstein publishing house in Vienna with his wife Hilda (née Ullstein) in May 1945, which brought out its own production and was merged with the Berlin house in 1954 with Ross becoming a member of the oversight board. He held the position of President of the Austrian Association of Booksellers.
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