39 Very Short Books

 39.  The Wit and Wisdom of Dan Quayle
 38.  A Guide to Arab Democracies
 37.  A Journey Through the Mind of Dennis Rodman 
 36.  Contraception by Pope John Paul II 
 35.  Easy UNIX
 34.  Greenland Tips on World Dominance 
 33.  Bob Dole: The Wild Years
 32.  Mike Tyson's guide to Dating Etiquette
 31.  Mormon Divorce Lawyers
 30.  The Logical Side of Dianetics
 29.  The Chiropractors Guide to Medicine 
 28.  Salt Lake City Drinking Games
 27.  Biographies of Asians in Basketball
 26. "My Liberal Friends" by Jesse Helms
 25. "Things I Wouldn't do for Money" by Dennis Rodman
 24.  Human Rights Advances in China
 23. "All My Friends From the Country Club" by Tiger Woods
 22. "The Book of Virtue" by Bill Clinton
 21. "To all the Men I've Loved Before" by Ellen DeGeneres.
 20. "My Plan to Find the Real Killers" by O.J. Simpson
 19. "Strom Thurmond:  Intelligent Quotes"
 18. Al Gore:  The Wild Years
 17. Amelia Earhart's Guide to the Pacific Ocean
 16. America's Most Popular Lawyers
 15. Career Opportunities for History Majors
 14. Detroit - A Travel Guide
 13. Different Ways to Spell "Bob"
 12. Dr. Kevorkian's Collection of Motivational Speeches
 11. Non-Alcoholic Irish Beers
 10. Ethiopian Tips on World Domination
  9. Everything Men Know About Women
  8. Everything Women Know About Men
  7. French Hospitality 
  6. George Foreman's Big Book of Baby Names
  5. "How to Sustain a Musical Career" by Art Garfunkel
  4. Favorite Spotted Owl Recipes by the EPA
  3. Staple Your Way to Success
  2. The Amish Phone Book
 
  ..and the Number One World's Shortest Book:

  1. The Engineer's Guide to Fashion