During World War II, Los Angeles was the ultimate boom town. By the end of the war, the L.A. area had produced 17 percent of all of America's war needs. North American Aviation, Inc. (NAA), operating out of their main Inglewood, California, plant, which is south of and adjacent to the city, was a key player in that work. From 1938 to 1944, NAA built over 40,000 aircraft, more than any other company in the United States. The bulk of them were of three iconic types designed by NAA: the P-51 Mustang, arguably the best fighter of WWII; B-25 Mitchell medium bombers, which saw worldwide combat; and two-seat military pilot trainers, such as the AT-6 Texan. This is a fascinating story of a remarkable time in aviation history, when American businesses helped fund the arsenal of democracy that helped defeat the Axis powers. Warbird Factory tells this story with over 200 photographs, many of which come directly from the NAA/Boeing archives, where they have resided since WWII.