First edition, first printing published in 1949 by Thomas Nelson and Son, London.
Book: Vg, 279pp. Original pale blue cloth with gilt stamped titles. Boards are very clean with sharp corners, fading/light pushing to spine tips, titles are bright, light foxing to the text block. Presentation/award label to the ffep dated 1949. pages are tightly bound and clean, with a colour frontispiece. Jacket: Good, scarce jacket is complete but chipped and scuffed to the edges, general age soiling, price clipped, rubbing along hinge lengths, some small chips to edges. edges strengthened to verso with two thin strips of brown paper have. Great cover art by S Drigin.
* Listed in the encyclopedia of science fiction, a bizarre mixture of avaition/wartime lads adventure and science-fiction featuring a Halifax Bomber which lands on a mysterious cloud island, so firm it can be walked upon...they soon realise they are not alone. Uncommon in jacket.