According to company lore, Gibson, the guitar manufacturer, had ceased guitar production during World War II with only "seasoned craftsmen" too old for battle doing repairs and completing the few instruments already in progress at their Kalamazoo, Michigan factory. However, beginning in 1942, Gibson started producing wartime guitars each marked with a small, golden "banner" displaying the slogan: "only a Gibson is good enough". Over 9000 of these "Banner" guitars were produced between 1942 and 1945 and they are considered to be some of the finest acoustic guitars ever produced but who was making them? In this work of musical and social history, Thomas explores the origins of the Gibson "Banner" guitars and the remarkable women, many of whom had no prior training in instrument construction, who built them.