Description McClelland & Stewart, Toronto, 1937, believe 1st Canadian ed/pr. Hard cover, 304 pages. Black boards with blue graphic and lettering on front, blue lettering on spine; light corner and spine end wear; a few marks on boards; binding sound with a lean. Worn just jacket with price intact shows edge and cover wear, edge tears and tears repaired on verso; some soil/stains/toning and rubs. Interior clean and unmarked with tanning pages, outer page block lightly tanned with some age spotting and light soil. ‘Humberstone’s father died, leaving the new powers which he had created in the hands of seven men, one of them his son, all pledged never to make use of these powers except to prove by illustration that war between nations was no longer a possible enterprise.’ (from front flap)