Last month, a visitor delivered a small plastic bag containing several tree seeds to the Truman Library in Independence.

The seeds had fallen from trees, still standing, that survived the atomic bombing of Hiroshima in 1945. Clifton Truman Daniel, eldest grandson of former president Harry Truman, had been presented them this summer in Japan.

Library officials hope to plant the seeds in Powell Gardens and -- when saplings are sufficiently mature -- transplant them to the library grounds....