There's nothing like having the original tech orders that specified how camouflage was to be applied to aircraft, both Air Corp and Navy, in WW-II. Even better are the exact specs for insignia and the dates when each insignia style was used. 51 years ago, Jay Frank Dial...a professional modelbuilder and amateur aviation historian...produced a thin book that summarized that information using nothing more than the original tech orders as his source. Jay passed away many years ago and his book has become virtually impossible to find. Since I knew Jay at the time he produced the book, I have a