found: Wikipedia, viewed October 7, 2022:North American Aviation (North American Aviation (NAA) was a major American aerospace manufacturer that designed and built several notable aircraft and spacecraft; products included the T-6 Texan trainer, the P-51 Mustang fighter, the B-25 Mitchell bomber, the F-86 Sabre jet fighter, the X-15 rocket plane, the XB-70, the B-1 Lancer, the Apollo command and service module, the second stage of the Saturn V rocket, and the Space Shuttle orbiter. Through a series of mergers and sales, North American Aviation became part of North American Rockwell, which later became Rockwell International and is now part of Boeing. ... Clement Melville Keys founded North American on December 6, 1928, as a holding company that bought and sold interests in various airlines and aviation-related companies. ... The fatal Apollo 1 fire in January 1967 was partly blamed on the company. In September, it merged with Rockwell-Standard, and the merged company became known as North American Rockwell)
