Biggles Flies North

Written by W. E. Johns

Copyright 1939

A single adventure serialized as Biggles on the Treasure Trail over 9 issues of the Modern Boy, #23 - #31, July 23, 1938 to September 17, 1938.
A friend of Biggles, Wilks, has started up a freight airline hauling gold to the Arctic region of Canada. He has some competitors who will stop at nothing, even murder, to ruin his plans. He asks for help from Biggles and allies.