Original WWII U.S. Navy SHIPS 322 instruction book for Radio Navigation Equipment

Original WWII U.S. Navy SHIPS 322 instruction book for Radio Navigation Equipment Model DAS-4 (Loran System). Made by FADA Radio & Electric Co. for the Bureau of Ships, marked Confidential, and dated April 6, 1945. Clean original wartime technical manual with strong appeal to Navy, LORAN, and military electronics collectors.