Learn about the history, development, and legacy of the John Deere Model A tractor, and which market role this tractor was ...
Engine 557 ran on coal when it first came to Alaska in 1944. Using oil, the 557 Restoration Company fired it up again in ...
Working model, scale 1:12, of twin-cylinder steam driven double trunk screw engines, as extensively used for screw propulsion on the HMS 'Minotaur' and 'Northumberland' (1865-1868), construction ...
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