Papers of Sir Mortimer Wheeler, FSA (1890-1976), Katherine M. Richardson, FSA, and others relating to excavations and sites visited in Brittany and Normandy for a survey of Iron-Age camps. Excavation was interrupted by the outbreak of war and not all records have survived.
See the reports of the 1938 expedition in Antiquity, 13 (1939), 58-79; 1939 expedition, A.J., 21 (1941), 265-70, and Sir Mortimer Wheeler, Katherine M. Richardson, Hill-Forts of Northern France (SA Research Report no. 19, 1957).