In April 2009 The Anne Frank Center USA announced plans to plant trees in ten U.S. cities as a symbol of "the growth of tolerance." AP: Anne Frank Saplings May be Planted in 10 US Cities (April 17, 2009)

The diary was meant to just be a place for Anne to vent while in hiding during the Nazi Holocaust, but has become a public document of some of World War II's most wrenching and significant events from a personal perspective.

After the Frank family's discovery, arrest and deportation, the family who was hiding them gathered her diary and other papers, planning to save them for Anne. When she died in a concentration camp, the papers were turned over to Anne's father, Otto Frank, who published them under the title The Diary of a Young Girl.

• In her diary, Anne Frank wrote about tracking the seasons by watching the growth of a horse chestnut tree while hiding from the Nazis. In 2009, the Anne Frank Center USA announced that they would like to plant 3-foot saplings would come from the ailing Amsterdam tree that Frank watched. The group plans to plant the saplings in ten U.S. cities potentially including at the Sept. 11 memorial, the White House and at the Children's Museum of Indianapolis.AP: Anne Frank Saplings May be Planted in 10 US Cities (April 17, 2009)