This thirteen-volume series, published for the Yorkshire Archaeological Society between 1914 and 1965, is an extensive collection of the pre-thirteenth-century deeds and charters of Yorkshire, which had previously remained largely unpublished. The first three volumes were expertly edited by William Farrer (1861–1924), after whose death Charles Travis Clay (1885–1978) took up the task. The series was well respected for the quality of Farrer's editing, which was only surpassed by that of Clay in the later volumes. Volume 8 (1949) focuses on the Honour of Warenne. As Farrer's original notes on Warenne contained only forty-five charters, Clay expanded the range of the present corpus to include texts up to 1240, and charters of the lord of the honour. Each text is accompanied by notes and discussion of points of interest. This volume also contains facsimile plates of select documents, and detailed indexes.