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Union Pacific Steam Engine # 9000 - Only one type of this 4-12-2 steam engine was built: the Union Pacific Railroad's 9000-series or class of locomotives. ALCO had obtained permission to use the conjugated valve gear invented by Sir Nigel Gresley. This system used two hinged levers connected to the outer cylinder's valves to operate the inner cylinder's valve. The 9000 class locomotives were the largest to use the Gresley gear feature.

Union Pacific 9000 is on display at the Southern California Chapter of the Railway & Locomotive Historical Society's museum in Pomona, Los Angeles, California. Only 88 were built in the late Only this one, the prototype, exists today.

Winter Steam Engine, New Hampshire, United States

Winter Steam Engine, New Hampshire, United States -"Steaming Home" by Kathleen Cleamons

Essex Steam Train's "Engine 40" passing through the autumn foliage at Canfield Woods in Deep River, CT.

Essex Steam Train's Engine 40 passing through the autumn foliage at Canfield Woods in Deep River, CT.