Yes, facts are stubborn things, yet Neo-Nazis and other Holocaust deniers continue to spread lies that run into the teeth of the facts. Anne Frank’s diary was written with ink commonly used in Amsterdam at the time:
“Mainly, Miss Frank used a gray-blue ink for fountain pens in which iron was clearly present. At the time, the report states, ink with a strong iron content was in general usage. Only after 1950 were inks with much less or no iron introduced, the study said.
Challenged by Neo-Nazis
During a criminal trial for defamation against neo-Nazis held in Wiesbaden, West Germany, in 1980, Mr. Barnouw said, the defendants maintained that the diary was a fake because corrections had been made in black, blue and green ink with a ballpoint pen and that such pens were not produced until 1951. The defendants could not produce any examples of such corrections, however. Mr. Barnouw noted that changes in the diary by Otto Frank, Anne’s father, were made in pencil.
Although the ballpoint theory was discredited, it continued to be used by neo-Nazis in Europe and the United States. Anti-Semitic pamphlets cited in the book show that the neo-Nazis had a larger aim in trying to discredit the diary as a hoax: to ‘’prove’’ that there had never been a ‘’final solution’’ plan to exterminate the Jews.”
http://www.nytimes.com/1989/06/08/books/an-authenticated-edition-of-anne-frank-s-diary.html