8vo. xl, 154pp. With a black and white photographic frontispiece and numerous black and white photographs and illustrations in the text. Original publisher's navy cloth, lettered in gilt, pictorial dustwrapper. Some marking to top-edge, else clean and crisp, a very good copy.

A new edition, with an historical essay and notes by Denys Pringle, of Lawrence's thesis, submitted whilst studying at Oxford, on the military significance of the architecture of the crusading kingdoms. The work was first published by the Golden Cockerell Press in 1936 following the author's death the year prior.