name of book about lord inchcape's daughter flying across atlantic?

Question

Sir arther conan doyle was involved in the story -- the pilot had died and was trying to contact his wife through a medium wha was known to sir a.c.doyle

Answer 1

The Hon. Elsie Mackay, third daughter of Lord Inchcape and a well
known pilot, aspired to be the first woman across the Atlantic flying
east to west. She denied plans for such a venture, but when Captain
Walter R. Hinchcliffe left England March 13, 1928, for an undisclosed
location in North America, Mackay mysteriously vanished.
In August, five months after The Endeavor's disappearance, a bottle
washed up on the shores of
North Wales, containing the message, “Goodbye all, Elsie Mackay and
Captain Hinchcliffe. Down in
fog and storm.”
http://216.239.53.100/search?q=cache:6_uGPzpreYUC:www.k12.nf.ca/sptech/streetpics/mackay.html+%22Elsie+Mackay%27&hl=en&lr=lang_en&ie=UTF-8


"Lord Inchcape's daughter was the Hon. Elsie Mackay. She had a Stinson
Detroiter aeroplane called the Endeavour shipped to UK in the
Lusitania and delivered to the now defunct Brooklands motor race
track.

"In spite of the opposition of her father, she schemed with Capt
Hinchliffe, her co-pilot, to be the first woman to fly the Atlantic
east to west. They set off secretly from the RAF College at Cranwell
on Tuesday 13th of March 1928. Five hours later they were sighted
passing over Mizzen Head on the Atlantic coast of County Cork. Two
ships reported sighting a plane out at sea. They were not seen again.
http://www.users.globalnet.co.uk/~belgae/ballantr.htm

Answer 2

Is it a puzzle.......?????????all the best.