London: Hutchinson & Company, No Date. First edition. Hardcover. Very Good / Very Good. No date, circa 1942. A sequel to The Thin Blue Line. Printed on thin war-time paper. "A real-life novel of the R.A.F. World War II air combat. Premliminary pages browned but the text proper is fine. With 17 photographs. The jacket is a bit worn at the heel of the spine and the corners but overall remains very attractive and bright.