International Harvester D2 1/2 Ton Pickup, from the 1930-ies D-series, (original specifications), a versatile platform that included such gems as a Tanker Truck and a “Jungle Yacht” Tractor-trailer:
Ford F-1 from the Ford F-Series first generation (1948-1952). It was a purpose built truck (not derived from a car, and so known as the Ford Bonus-Built), available in many configurations, also as a panel-van
Chevrolet’s half-ton pickup truck in 1953 (Thriftmaster) belonged to the Advanced Design series (1947-1955). Fifty years later, the styling for the Advance-Design trucks was the inspiration for both the Chevrolet SSR and the Chevrolet HHR.
Ford F-100 was the pickup from fourth generation of the Ford F-Series (1961-1966). In 1965, F-100 got an all-new Twin I-Beam front suspension with coil springs. More than half a century later, the twin I-beam design is still in use in the E-Series.