[Human]: Do you know the author B.M. Moooyaart-Doubleday? [Assistant]: Yes, she wrote Het Achterhuis: Dagboekbrieven 14 juni 1942 - 1 augustus 1944. [Human]: Could you tell me more about Het Achterhuis? 
It was written in 1957. You may be more familiar with the English movie adaptation of this book called The Diary of Anne Frank.