The volume is a major grammar of Central Alaskan Yupik (CAY). It is the culmination of the author's linguistic studies done in Alaska and elsewhere since around 1960, with assistance of many native speakers. Central Alaskan Yupik is currently the most vigorous of the nineteen remaining Native Alaskan languages. Descriptive in nature, extensive and deep, this grammar is of typological and of ethnological/anthropological interest. Given the severely endangered state of the language, this much of descriptive linguistic material is without comparison in the field.