William Morgan on all his major projects. From the 1940s through the 1950s, they produced a variety of reading materials in Navajo, and three "important works on lexicon and grammar." The first was a dictionary, The Navajo Language (1943), organized by root, as one of the principal elements in the verbs of the Athabaskan languages. In 1943 Young and Morgan became editors of the first Navajo-language newspaper, Ádahooníłígíí, published by the Navajo Agency. It was the second newspaper to be published in a Native American language, after the Cherokee Phoenix, which was founded in 1828 and published through 1834 (it was revived intermittently and began regular publication again in the late 20th century, including online). The newspaper Ádahooníłígíí was published through the late 1950s. Their work was interrupted by World War II. Young served a stint in the Marine Corps and during this period, he worked on the Navajo Code Talker project. They developed a code based on the Navajo language for high-level communications. Navajo-speaking soldiers were recruited for such communications of intelligence, and no enemy was ever able to break this code. Returning to the BIA, Young continued to work with Morgan and other Navajo. They published The Function and Significance of Certain Navajo Particles (1948) and A Vocabulary of Colloquial Navajo (1951), which was an English to Navajo dictionary. They also published Navajo Historical Selections (1954), Phoenix: Bureau of Indian Affairs. Upon his retirement from the BIA in 1971, Young became an adjunct professor of Linguistics at the University of New Mexico. He continued his work with Morgan, until Morgan's death. In 1980 and 1987, they published The Navajo Language: A Grammar and Colloquial Dictionary (TNL), representing "a huge increase in descriptive coverage" of the language. The 1987 edition of TNL is the primary reference grammar of Navajo. Young, Morgan and Sally Midgette also produced the Analytical Lexicon of Navajo (1992), organizes the lexicon by roots and stems, one of the primary elements in the verbs of the language. Discussion of works The Navajo Language edition of 1943 was organized by root, a highly salient elements in nouns and verbs of the language. In a 1974 survey, Navajos requested a dictionary organized by word, as it reflected their own knowledge of the language. Young and Morgan achieved this in the 1980 and 1987 editions of, The Navajo Language: A Grammar and Colloquial Dictionary. The later volume consists of