Who gave Anne Frank her diary?

Anne was given her diary by Otto Frank, her father, in 1942. At that time their native Holland had been under German occupation for two years. As Jews, the Franks were in serious danger of being arrested at any moment and sent to a concentration camp. It was in the midst of all this terror and chronic uncertainty that Otto gave his daughter a gift that would become famous the world over.
Two years after starting her diary, Anne heard a radio broadcast by a Dutch government official in exile. He encouraged people in Holland to hang on to their letters, journals, and diaries as they would be a vital testament to the horrors of the Nazi occupation once it finally ended. Despite all the hardships they subsequently endured, Otto did precisely that, and the gift he gave to Anne established itself as one of the most eloquent, heartfelt testimonies of that unspeakably dark period in human history.