Michael E. Krauss is a linguist who has worked extensively on the Na-Dené language family, especially on proto-Athabaskan, pre-proto-Athabaskan, the Eyak language, and also numerous other Athabaskan and Eskimo-Aleut languages. With his 1991 address to the Linguistic Society of America, Krauss was among the first to create an awareness of the global problem of endangered languages. Wikipedia
The definitive Wikipedia entry for Michael Krauss. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Michael_Krauss