Yorkshire the Secret War 1939-1945 by Ron Freethy
this book charts the experiences of those working in Yorkshire's hush-hush occupations, such as silk map making, radar components and machine guns, showing how vital Sheffield's steel industry was to the war effort. The author's well researched book will fascinate and inform all those who took part in the last war, and anyone interested in Yorkshire's all-out determination to play an important role in the defeat of the enemy.