This book provides a description of Yintyingka, a Pama-Nyungan language of Cape York Peninsula in Australia. The language is no longer spoken, but the analysis is based on a range of archival materials from the 1920s to the 1990s, as well as the authors' fieldwork experience with neighbouring languages. This book pays special attention to the language in its social context, historical-comparative analysis, and the methods used to analyse the archival material.