R. G. Collingwood is an important 20th-century historian, archaeologist and philosopher whose works are the subject of continued interest, analysis and study. There is an unquestionable need to support this research activity with the provision of a reference guide which is fully up-to-date, informed and authoritative. The Companion therefore lists all primary and secondary material relevant to the study of Collingwood in all his fields of expertise - historical theory, philosophy and archaeology. It also provides a guide to archive material relevant to his life, together with sources and locations. The resulting volume is an essential companion to the understanding of the life and thought of R. G. Collingwood.