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An advanced design pedrail wheel climbing stairs.
An advanced design pedrail wheel climbing stairs.
1904 illustration of H. G. Wells' December 1903 The Land Ironclads, showing huge ironclad land vessels, equipped with pedrail wheels.
1904 illustration of H. G. Wells' December 1903 The Land Ironclads, showing huge ironclad land vessels, equipped with pedrail wheels.