At least one publisher told the paper that she'd be interested in reading a manuscript that includes details about the boys' coach, a former monk who reportedly taught the children meditation in the cave and gave up his limited supply of food and water so they could have more.
The footage, released on the Thai Navy SEALs Facebook page, shows a complex operation with numerous divers - both foreign and Thai - using pulleys, ropes and rubber piping to haul members of the football team to safety.
Divers extracted the team in a high-risk mission inside the flooded passageways.
Thai cave boys pictured happy and well in hospital.
Eight boys had been brought out in two expeditions on Sunday and Monday, leaving a further four and their football coach to make the perilous journey back to the entrance on Tuesday.
"We would like to convey our profound gratitude to all persons involved in the rescue operation, which unfortunately took the life of one of the divers".
The rescue process started at 10am local time on Sunday and involved 13 worldwide divers and five Thai navy seals, who were referred to as "an all-star team" by NarongsakOsatanakorn, who is the Governor of Chiang Rai province and head of the joint command centre coordinating the rescue.
Thailand cave rescue: Mission to save boys under way
Another, identified as Tun, writes: "Mom and Dad, please don't worry, I am fine". "Don't be anxious ", wrote another boy, Mick. The search and rescue operation has involved dozens of global experts and rescuers, including a US military team.
"It is with great sadness that I confirm that Harry's dad passed away last night a short time after the successful rescue operation in Thailand", said Andrew Pearce, head of clinical services at SAAS MedSTAR, where Harris works.
Rescue mission chief Narongsak Osottanakorn said: 'We don't see the children as at fault or as heroes.
The method was extremely risky, but dwindling oxygen levels in the cave and fears of more monsoon rains to come made a decision urgent. However, the first four boys were safely brought out of the cave on Sunday, tethered to rescue divers. Relatively mild weather and a massive effort to pump out water created a window of opportunity.
Most of the boys rescued from inside a flooded cave in northern Thailand lost an average of 2 kilograms (4 pounds) during their ordeal, but were generally in good condition, a senior health official said on Wednesday.
The group became trapped in rising flood waters and were found nine days later emaciated and dishevelled on a muddy ledge, with water lapping ominously below.
"We had a little bit of hope that they might still be alive but we had to do it, we just had to move forward", Rear Adm Arpakorn Yuukongkaew said.
Thailand's Prime Minister Prayuth Chan-ocha on Wednesday thanked people involved in the rescue.
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