Lionel is known mostly for the O and Standard gauge trains. But they also made fine models in two smaller gauges - OO and HO. Overlooked by collectors for years, these two gauges are beginning to gain the recognition they deserve. Lionel called their OO Lionel for trains 'gems of scale model railroading craftsmanship.' And they were. Seeing these gems in action on OO layouts is a rare treat indeed. Lionel's HO line-up includes both scale and whimsy. We take a look at the Postwar and Modern eras, including FM C-liners, 0864-series boxcars, the Southern Pacific Daylight and the RailScope FA-2. See HO versions of O gauge classics like the Milk Car and Satellite Launching car.