Several letters written by Japanese soldiers who died on an island in Indonesia during World War II have been found in the United States.

The Japan-War Bereaved Families Association (JWBFA) received a request from a U.S. nonprofit organization that has been working to return the letters from soldiers addressed to their families in Gifu, Fukuoka and Nagasaki prefectures. Despite their best efforts, the organization has so far been unable track down some of the families.

Kosuke Kudo, 48, of the Obon Society, an organization based in the United States that works to return personal items to families lost during war, said he hopes to deliver the letters to convey the value of peace.