Hamilton Standard Propeller Division of United Aircraft Corp., 1947.  192 pages.  Paper Covers, steel spiral binding.  New condition, shelf scuff lower edge cover  9in x 11in x .5in; 1 lb, 8 oz .AAF green manual with detailed instructions for inspection and overhaul.  Several color schematics.    

This is a very collectible round engine era manual.    A standout example of the high quality publications seen from Post-WWII aircraft industry post-sales support.