L. Ron Hubbard 
Ole Doc Methuselah [PDF ebook] 

If you love Star Trek, you will love Ole Doc Methuselah.He’s renowned throughout the universe, a star among stars. .Ole Doc Methuselah is his name, and saving the universe is his game. He journeys with his bag of tricks to the far corners of the cosmos, cutting out the corruption and cruelty, and containing the warped psychology plaguing mankind.So if you’re looking for an adventure to remember, this is just what the doctor ordered."Classic adventures by a classic writer." -Roger Zelazny