She had been in a hidden annexe for two months, hiding from the Nazi occupiers of Amsterdam with her family and another Jewish family.
The Jewish teenager apparently covered up the pages because she anxious that other people in her hideout would read them, as they contain a series of dirty jokes and her thoughts on sex education, said Ronald Leopold, director of Anne Frank House in Amsterdam. She wrote the recently discovered pages on September 28, 1942 at the age of 13, about three months after the Frank family went into hiding, and later covered them up with brown paper, the Associated Press reports.
Anne Frank House museum executive director Ronald Leopold, says that "like every adolescent she is curious about this subject", adding that Anne wrote about the subject elsewhere in diary pages that already have been published. The Frank family lived in a modest brick building from 1934 in the Dutch capital, after fleeing rising anti-Semitism in neighbouring Germany, until they went into hiding.
Frank's inclusion of sexual material in her diaries makes sense-during her 25 months of hiding, she matured from a young girl into a young woman and even conducted a brief romantic relationship with Peter van Pels, a boy who hid with the Frank family.
"I'll use this spoiled page to write down "dirty" jokes", a 13-year-old Anne wrote on a page with crossed-out sentences.
"It's a very cautious start to her becoming a writer", he said.
California marks record high STD's in 2017
Chlamydia and gonorrhea rates among African-Americans were almost five times higher than caucasians, CDPH found. STDs are booming in California, with health officials anxious about a 45% increase over the last five years.
The Huygens Institute of Netherlands History was also a partner in the project.
They photographed the pages, backlit by a flash, and then used image-processing software to decipher the words, which were hard read because they were jumbled up with the writing on the reverse sides of the pages. She had no idea she would one day become one of the Holocaust's most famous symbols. Anne and her sister died in Bergen-Belsen camp.
"At the end she explicitly names her father, Otto, who had been in Paris and saw houses with prostitutes", the Anne Frank Housewrites.
The house where the Franks hid was turned into a museum that is one of Amsterdam's most popular tourist attractions.
The two pages are not the only time Frank jotted down dirty jokes or wrote about sexuality, although in later passages she treats the subjects more maturely.