Air Navigator's Handbook, US Navy June 1945

Here is an original Air Navigator's Handbook for US Naval Air Navigators published in 1945.  This 7 x 5 inch, 1/2 inch thick pocketbook is full of information required by air navigators to fulfill their responsibilities. 

This 6-ring handbook appears to never have been used or issued. The cover and all page are in near-mint condition.