1. S Elsdon, and J. May , 1987 : The Iron Age pottery from Dragonby: a draft report. University of Nottingham, Department of Archaeology.
2. A.R. Hall, 1922 : Archaeological records of woad (Isatis tinctoria L.) from medieval England and Ireland . InBeitrage zur Waidtagung. Arnstadt, Thuringer Chronik-Verlag, 21-22 and figs. 1 -2 .