North American Aviation
North American was founded in 1928 by Clement Melville Keys as a holding company with interests in airlines and aviation companies. In 1934 with the Air Mail Act, North American turned to manufacturing headed by James Kindelberger as part of General Motors. Based in California, the focus was on producing trainer aircraft but at the start of World War II combat aircraft came off the production line including types such as the B25 Mitchell and P51 Mustang. Over the next 50 years the company went through many mergers, becoming Rockwell International which is now part of Boeing.