In 1948, the Cherry Blossom Princess and U.S. Cherry Blossom Queen program were started by the National Conference of State Societies. A Princess was selected from each state and federal territory, with a queen chosen to reign over the festival. In 1952, Japan requested help restoring the cherry tree grove at Adachi, Tokyo along the Arakawa River, which was the parent stock of the D.C. trees but had diminished during the war. In response, the National Park Service sent budwood back to Tokyo.