Houghton Mifflin Harcourt publishers, Boston, New York; "The epic mission to sabotage Hitler's Atomic Bomb"; hardbound with black boards and nice gilt lettering on spine; inside boards have decorative maps showing attach routes; many wonderful black and white photos; see pics.
 
Plot -
"It's 1942 and the Nazis are racing to be the first to build a weapon unlike any known before.  They have the physicists.  They have the uranium.  Now all their plans depend on amassing a single ingredient:  heavy water, which is produced at Norway's Vemork, the lone plant in all the world that makes this rare substance.  Under threat of death, Vemork's engineers push production into overdrive..."