They are among a £300,000 archive compiled by Captain Robert Lewis, co-pilot of the Enola Gay B29 bomber, which also includes his flight logs and report of the bombing raid.
The previously unseen documents used to plan the dropping of the world's first atomic bomb on Japan on August 6, 1945, in a bid to end the Second World War have emerged for sale 70 years on. The collection also includes a hand-drawn diagram, the pilot of the plane that bombed Hiroshima was told to arrive at 30,000ft, drop the payload two miles short of the city, then veer away sharply at 28,500ft. Pilot: The incredible lot is being put to auction by the son of Captain Robert Lewis (pictured) who was on the Enola Gay that fateful day