Notes
Tunnel in the Sky, a Heinlein juvenile novel.

The image opposite and the blurb below are from the 1973 printing of the Pan Books paperback edition, ISBN 0330020293. Cover illustrator unknown.

Publisher’s Blurb – Lower Cover
'Something ahead in the grass! Rod froze and watched. It had been the tiniest movement; he waited. There it was again, moving slowly from right to left across his front. It looked like a dark spike with a tuft of hair on the tip...'

In an age when rocket ships are museum pieces and interplanetary travel is carried out by means of the Ramsbotham Jump, Rod Walker is one of a group of male and female students sent individually on a strenuous survival test to a distant planet.

Retrieval arrangements go wrong and the young people are left to face the alarming challenge of an unknown world...

'A thrilling story which will appeal to discriminating addicts of science fiction.'
SUNDAY TELEGRAPH

'A tough, ruthless and convincing story, beautifully told and with many memorable characters... a fine tale of adventure.'
THE TIMES LITERARY SUPPLEMENT