Just to clear up any confusion, the following books were written by other Jack Simpsons:
Simpson, Jack. Socrates and Suits: Dialogue between a Philosopher and a Fighter Pilot.
Simpson, Jack. $Elf-Publish for Profit: By Avoiding Booby Traps.
Simpson, Jack. Eucalyptus Plantation Pests and Diseases: Crop Loss Study.
Simpson, Jack. Osutoraria no shokubutsu to dōbutsu.
Also, I am not the Man with the Donkey.