This book is a source of vocabulary and grammatical information that is indispensable for teachers and students of the Navajo language. Beginning with an explanation of the Navajo sound system, the publication is followed by a 125 page long outline of Navajo grammar. The work presented is also composed of a two part dictionary: 247 pages Navajo – English and 101 pages English – Navajo. Young and Morgan have used painstaking care in gathering, arranging and describing the numberless complex details of Navajo language. Originally published in 1943, it was supplemented with ‘The Vocabulary of Colloquial Navajo’ in 1950, using a wealth of sentence examples for each verb entry. Both publications are now once more made available by Native Child Dinétah.