During the 1940’s & WWII: “Few Navajos of the period spoke or understood English, with the result that supervisors and others who came in contact with them began to demand a dictionary in the hope of learning enough Navajo to meet basic communication needs. To meet this demand, the data that had been brought together were arranged in alphabetic order and published by the Bureau of Indian Affairs, under the title The Navajo Language (1943).” (Young and Morgan 1987)
- Young, Robert W. and William Morgan, Sr. (1943). The Navajo Language, Grammar and Dictionary. Phoenix: Bureau of Indian Affairs.
- Young, Robert W. and William Morgan, Sr. (1948) The Function and Signification of Certain Navajo Particles. Phoenix: Bureau of Indian Affairs.