Sadako and the Thousand Paper Cranes
Sadako and the Thousand Paper Cranes is a children's historical novel written by Canadian-American author Eleanor Coerr and published in 1977. It is based on the true story of Sadako Sasaki, a victim of the atomic bombing of Hiroshima, Japan, in World War II, who set out to create a thousand origami cranes when dying of leukemia from radiation caused by the bomb.
Source: Wikipedia — Sadako and the Thousand Paper Cranes (CC BY-SA 4.0)