USS Henley (DD-39)- 3" Throttle Valve for Cruising Engine and 4 1-2" Special Cross Valve - NARA - 76020173.jpg
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USS Henley (DD 39) 3" Throttle Valve for Cruising Engine and 4 1 2" Special Cross Valve NARA 76020173, 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): 3" Throttle Valve for Cruising Engine and 4 1/2" Special Cross Valve
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throttle special drawing rights