• R.B. Harbottle and M. Ellison. 'An Excavation in the Castle Ditch, Newcastle Upon Tyne, 1974-6', in Archaeologia Aeliana, 5th Series, Volume IX
• W.H. Knowles, F.S.A., in Archaeologia Aeliana, 4th Series, Volume II.
• Excavation under an arch of the railway viaduct of the last area available for investigation within the castle site. An area c.6.5m x 8.5m of stratified Roman, Saxon, Medieval and Post-Medieval deposits were exacavted (1992, Jesmond Cemetery Gates Archive Store, Museum of Antiquities University of Newcastle Upon Tyne). Reference: Medieval archaeology: journal of the society for Medieval Archaeology 37/1993 285-6.
• Excavation of the Heron Pit; Underground chambers emptied out (UAD Number Newcastle 105/106). Reference: Proceedings of the Society of Antiquaries of Newcastle Upon Tyne 2/1906/16:21.

Plans, Sections and Elevations: