<P> After the diary became widely known in the late 1950s, various allegations against the veracity of the diary and / or its contents appeared, with the earliest published criticisms occurring in Sweden and Norway . </P> <P> In 1957, Fria ord ("Free Words"), the magazine of the Swedish neofascist organization National League of Sweden published an article by Danish author and critic Harald Nielsen, who had previously written antisemitic articles about the Danish - Jewish author Georg Brandes . Among other things, the article claimed that the diary had been written by Meyer Levin . </P> <P> In 1958, at a performance of The Diary of Anne Frank in Vienna, Simon Wiesenthal was challenged by a group of protesters who asserted that Anne Frank had never existed, and who challenged Wiesenthal to prove her existence by finding the man who had arrested her . Wiesenthal indeed began searching for Karl Silberbauer and found him in 1963 . When interviewed, Silberbauer admitted his role, and identified Anne Frank from a photograph as one of the people arrested . Silberbauer provided a full account of events, even recalling emptying a briefcase full of papers onto the floor . His statement corroborated the version of events that had previously been presented by witnesses such as Otto Frank . </P> <P> In 1959, Otto Frank took legal action in Lübeck against Lothar Stielau, a school teacher and former Hitler Youth member who published a school paper that described the diary as "a forgery ." The complaint was extended to include Heinrich Buddegerg, who wrote a letter in support of Stielau, which was published in a Lübeck newspaper . The court examined the diary in 1960 and authenticated the handwriting as matching that in letters known to have been written by Anne Frank . They declared the diary to be genuine . Stielau recanted his earlier statement, and Otto Frank did not pursue the case any further . </P>

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