Secret pages in Anne Frank's diary reveal her reflections on sex

Researchers have deciphered two pages of Anne Frank's diary that she had pasted over with masking paper. Four jokes she considered "dirty" and a candid explanation of sex, contraception and prostitution were revealed.

Using digital technology, Dutch researchers have revealed why Anne Frank once taped over two pages in her diary with brown sticky paper

"Anyone who reads the passages that have now been discovered will be unable to suppress a smile," said Frank van Vree, director of the Netherlands Institute for War, Holocaust and Genocide Studies, in reference to the jokes contained in the newly deciphered diary pages.

"The 'dirty' jokes are classics among growing children. They make it clear that Anne, with all her gifts, was above all also an ordinary girl," van Vree added.

Frank and her family hid in a cramped secret annex above a canal-side warehouse in Amsterdam from July 1942 to August 1944, along with four other Jews. They were betrayed and arrested by the Nazis in August 1944.

Read moreGerman railway nixes plan for 'Anne Frank' train

The pages, dated September 28, 1942, were contained in the red-and-white checkered diary Anne had received for her 13th birthday in June of that year, shortly before her family went into hiding.

Possibly fearing prying eyes or no longer liking what she had written, Frank covered over these pages with brown paper using an adhesive backing like a postage stamp. Their content remained a mystery for decades.

Anne Frank Tagebuch

Anne Frank's diaries are on display in the Anne Frank museum in Amsterdam

It turns out the pages contained four jokes about sex that Anne herself described as "dirty" and an explanation of women's sexual development, sex, contraception and prostitution.

Experts on Anne's multimillion-selling diary said the newly discovered text, when studied with the rest of her journal, reveals more about her development as a writer than it does about her interest in sex.

"They bring us even closer to the girl and the writer Anne Frank," said Ronald Leopold, executive director of the Anne Frank House museum.

Related Subjects

Read moreEditor who introduced Anne Frank to US readers dies at 93

Revealing long-hidden secrets

The deciphering was done by researchers from the Anne Frank museum, the Institute for War, Holocaust and Genocide Studies and the Huygens Institute of Netherlands History.

They photographed the pages, backlit by a flash, and then used image-processing software to decipher the words, which were hard to read as they were jumbled with the writing on the reverse sides of the pages.

In the passage on sex, Anne described how a young woman gets her period around age 14, saying that it is "a sign that she is ripe to have relations with a man but one doesn't do that of course before one is married."

On prostitution, she wrote: "All men, if they are normal, go with women, women like that accost them on the street and then they go together. In Paris they have big houses for that. Papa has been there."

One of her jokes also referred to war-time prostitution in her hometown: "Do you know why the German Wehrmacht girls are in Holland? As mattresses for the soldiers."

Read moreBestsellers that almost didn't make it to the bookstores


Fleeing from the Nazis

In 1933, Anne Frank fled from Germany to the Netherlands to escape the Nazis. In the Second World War, she had to go into hiding under the German occupation. For two years, she lived concealed in the secret annex of a house in Amsterdam. But someone betrayed her: On August 4, 1944, her family was found, arrested and deported to Auschwitz.


Family ties

Anne Frank (front left) had a sister Margot (back right) who was three-and-a-half years older than she was. Her father, Otto Frank, took this photo on Margot's eighth birthday in February 1934, when the family was already in exile in the Netherlands.


The hiding place in Amsterdam

Anne's father was able to found a company in Amsterdam. It had its headquarters in this building (c.). Otto organized the "secret annex" above and behind the premises. The family of four lived there from 1942 to 1944, together with four other people on the run from the Nazis. It was here that Anne Frank wrote her world-famous diary. The Anne Frank House has been a museum since 1960.


A diary as best friend

From the start, Anne wrote in her diary almost every day. It became a kind of friend to her, and she called it Kitty. The life she led was completely different from her previous, carefree existence. "What I like the most is that I can at least write down what I think and feel, otherwise I would completely suffocate," she penned.


Death in Bergen-Belsen

Anne Frank and her sister were taken from Auschwitz to Bergen-Belsen on October 30, 1944. More than 70,000 people died in this concentration camp. After the liberation of the camp, the victims were transported to mass graves under the supervision of British soldiers. Anne and Margot Frank were among those who died there from typhus. Anne was just 15 years old.


Anne's tombstone

Anne's tombstone also stands in Bergen-Belsen. This Jewish girl from Frankfurt had imagined her life differently. "I don't want to have lived in vain like most people. I want to bring joy and aid to the people who live around me, but who don't know me all the same. I want to live on, even after my death," she wrote in her diary on April 5, 1944.


Made famous by a diary

Her great dream was to become a journalist or author. Thanks to her father, her diary was published on July 25, 1947. An English version was brought out in 1952. Anne Frank became a symbol for the victims of the Nazi dictatorship. "We all live with the aim of attaining happiness; we all live differently, but the same." — Anne Frank, July 6, 1944.

Anne frequently edited and re-wrote her diary entries during the long months in hiding, especially in 1944 after the Dutch prime minister in exile asked in a radio broadcast that people keep records about life during the occupation.

But exactly when and exactly why Anne blocked out the pages will likely never be known. 

"She was probably afraid that other people she was hiding with, either her father, her mother or the other family would discover her diary and would read these things," Leopold said.

When Anne and her family were discovered on August 4, 1944, they were ultimately deported to Auschwitz. Anne and her sister died in the Bergen-Belsen camp. Anne was 15. Only her father, Otto Frank, survived the war.

Read moreLazio club to take fans to visit Auschwitz after Anne Frank incident

After the war, Frank had his daughter's diary published, and it went on to become a symbol of hope and resilience that has been read by millions and translated into dozens of languages.

The institutions that revealed the pages said that due to copyright issues, it's unclear whether the passages will be incorporated into new editions.

sb/eg (AP, Reuters)