The Klingon Dictionary

Summary
This book was written many years ago on Earth by a human, Marc Okrand, in order to teach tlhIngan Hol (the Klingon language) to other humans. He was aided in this (and other later works) by the captive Klingon, Maltz.

The first part of the book describes the grammar of tlhIngan Hol. The second part contains a Klingon-English and English-Klingon dictionaries. An addendum was added, expanding both the grammar and the dictionaries.

Later books by Okrand:
 * Klingon for the Galactic Traveler (KGT)
 * The Klingon Way (TKW)