North American Aviation is far from a household name, but their aircraft are very well-known. Their Second World War stable includes the T-6 Texan/SNJ/Harvard advanced trainer, B-25 Mitchell bomber and P-51 Mustang fighter, and their F-86 Sabre jet revolutionized fighter design in the West during the Korean War. Super Sabre, Bronco, Valkyrie, it’s hard to list all of their designs.
But the T-28 is one, like the T-6, which endures today in large numbers. The NAA-built Trojan and the French, license-build Sud Aviation Fennec are near-ubiquitous.