USS Henley (DD-39)- Main Turbine Barring Gear Bill - NARA - 75842138.jpg
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USS Henley (DD 39) Main Turbine Barring Gear Bill NARA 75842138, USS Henley (DD-39), US National Archives series: Alphabetical Series of Ship Engineering Drawings, Images from the National Archives and Records Administration, US National Archives location: other, USS Henley (DD-39): Main Turbine Barring Gear Bill
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high gear barring barred