USS Henley (DD-39)- 3-4" Cylinder Relief Valve U. S. Government Patter Exp. Spring - NARA - 76032845.jpg
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USS Henley (DD 39) 3 4" Cylinder Relief Valve U. S. Government Patter Exp. Spring NARA 76032845, 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): 3/4" Cylinder Relief Valve U. S. Government Patter Exp. Spring
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