Domfront. Blanchetière, L. Le Donjon ou Château féodal de Domfront (Orne). Domfront, 1893.

Dover. Blashill, T. (Journal Archaeol. Assoc., xl. 373-8).

—— Clark, ii. 4-24.

Duffield. Cox, J. C., LL.D., F.S.A. (Derbyshire Archaeol. Soc., ix. 118-78).

Dunstanburgh. Bates, Border Holds.

—— Compton, C. H. (Journal British Archaeol. Assoc., new ser., ix. 111-16).

Durham. Clark, ii. 32-5, and Archaeol. Journal, xxxix. 1-22.

—— Gee, H., D.D., F.S.A. (Proc. Soc. Antiq., 2nd ser., xx. 17-18, and Trans. Durham and Northumb. Archaeol. Soc.).

Exeter. Clark, ii. 44-7.

Falaise. Ruprich-Robert, V. Paris, 1864.