at the Farmall Plant in Illinois. IH was the first tractor manufacturer to accomplish this. Also in 1973, IH officially dropped the "Farmall" name from its tractor. This ended an era that began with the first Farmall "Regular" back in 1924. The 4568 V-8 4WD was introduced in 1975. In 1976, the entire tractor line got a new paint job and decal pattern. No longer were the side panels all white with chrome and black decals: they were now all red with a black-striped sticker. This was done to clear inventory for the forthcoming Pro Ag Line. In September 1976, IH released their 86 series Pro Ag Line. The models included the 786, the 886, the 986, the 186 Hydro, the 1086, the 1486 and the 1586. These new tractors had a new cab dubbed the Control Center that came standard with air conditioning, heat, and several radio-CB options. The driver sat well ahead of the rear axle and the fuel tank was mounted behind the cab over the rear axle. This increased balance and ride. Also in 1976, the 686 along with the "86" series four-wheel-drives were introduced, including the 4186, 4386, 4586, and 4786. In 1977, International Harvester introduced the first Axial-Flow rotary combine. This machine, produced at East Moline, Illinois, was the first generation of over 30 years of Axial-Flow combines. In 1979, IH introduced two all-new tractors: the 3388 and 3588, known as the 2+2 4WD line. These tractors were the result of taking two 1086 rear ends and hooking them together with a transfer case. A year later, the 3788 was introduced. Although these tractors performed well in the field, they never sold well. 1980s As the 1980s began, IH faced a stable economy, yet an unknown fate. In September 1981, IH announced at a dealership meeting the new "50 Series" of tractors, which included the 5088, the 5288 and the 5488. IH also released the "30 series", which included the 3088, the 3288, the 3488 Hydro, and the 3688. These new tractors proved once again that IH was innovative. Designed and styled by IH industrial designer Gregg Montgomery (Montgomery Design International), the new stylish design of the 50 and 30 series changed the look of tractors from that time forward. IH spent over $29 million to develop this new series, and the result was the last great lineup of tractors from International Harvester. Many