Oxford: Oxford University Press, 2007. 8vo.,pp. ix,284, black hardcover, silver lettering; a near-fine copy. No dust-jacket.

Oxford University Press, 2006. 8vo., pp.x,291-664, navy hardcover, gilt; a fresh and near-fine copy, with just slight bruise at headband, in a very good unclipped dust-jacket, with sunning to the spine, and now in a protective cover.

The Hague: Martinus Nijhoff, 1968. Reprint, 8vo., pp. xvi,298, paperback; a near-fine copy.

Oxford: Oxford University Press, 2011. 8vo.,pp. xii,180, pictorial hardcover, b/w figures and tables; a near-fine copy. No dust-jacket, as issued.

London: Faber, 1981. Reprint (this edition first published in 1966), 8vo., pp.287, blue hardcover, gilt; very good indeed, in a very good+ price-clipped dust-jacket, with publisher’s price sticker to front flap.

London: Faber and Faber Ltd, 1957. First edition, 8vo., pp.269, blue hardcover, gilt; foxing to edges and slightly throughout, very slight toning to endpapers, very slight soiling and shelf-wear to boards, spine very lightly bruised, a very good copy, in a price-clipped dust-jacket which is lightly soiled, lightly toned to spine and is slightly rubbed with two small closed tears to headband and tailband, else good +

New Jersey: Paulist Press, 2015. 8vo., pp.,xvii,118, pictorial hardcover; ownership bookplate to front paste-down, o/w a very good copy. No dust-jacket, as issued.

Oxford University Press, 2009. Large 8vo., pp.xvii,761, navy hardcover, gilt; fine, in a near-fine unclipped dust-jacket.

Berkeley/Los Angeles: University of California Press, 1958. 8vo., pp.xiv,354, brown cloth, gilt, b/w frontispiece and five further b/w plates; a very good copy, in an unclipped dust-jacket, which has chipping and several closed tears to extremities, most notably to ear upper margin.

Berkeley/Los Angeles: University of California Press, 1958. 8vo., pp.xix,479, brown cloth, gilt, b/w frontispiece and 2 further b/w plates; light foxing to top edges, a very good, clean copy, in an unclipped dust-jacket, which is lightly chipped and worn to edges, with light surface soil to the pale paper, and a couple of small closed tears to the upper edge.

Berkeley/Los Angeles: University of California Press, 1958. 8vo., pp.vii,444, brown cloth, gilt, b/w frontispiece and one further b/w plate; a very good, clean copy, in an unclipped dust-jacket, which is lightly chipped and worn to edges.

Paris: Librairie Thorin Et Fils, 1897. 8vo., pp. xxxvi, 437, quarter bound in publisher’s leather, gilt, marbled paper covered boards, five raised bands, marbled endpapers, b/w frontispiece, ex libris plate from 1909 to front paste-down; light foxing to prelims, yellowing to margins, split along gutter of front paste-down. rubbing to spine and extremities, small scratch to rear board, overall a very good copy.’#

Woodbridge: Boydell Press, 1995. 8vo,. pp.xxvii,160, brown hardcover, gilt; light rubbing to extremities, spine very lightly bruised, very slight sunning to front board and very slight sticker residue to rear board, a very good copy indeed.

London: Rivingtons. Second edition, 8vo., pp.35, printed pale green paper wrappers; light toning to wrappers, small area of loss to upper corner of rear wrapper, o/w very good.

Cambridge: At the University Press, 1957. Two volumes, first edition, 8vo.,pp. xii,366, 288, navy hardcover, gilt lettering, b/w plates, b/w frontispiece to vol.I; light toning to margins, a very good set, in very good price-clipped dust-jackets, which are lightly rubbed to extremities.

Oxford: at the Clarendon Press, 1962. Two Volumes, 8vo., pp.,xxii,708;611, black cloth, gilt, b/w illustrations, b/w frontispiece; stickers to front paste-down, pages lightly toned, fore-edge lightly toned, spines lightly faded of volume 1; no dust-jackets.

Turnhout: Brepols, 2013. 8vo., pp. 369, paperback; from the library of D.E. Luscombe, ownership inscription to front free endpaper, internally fresh and clean, a few marks and very light rubbing to wrappers, else a very good copy indeed.

London: SCM Press, 1991. 8vo., pp, xxii,494, black hardcover, gilt, ownership autograph to front paste-down endpaper, boards lightly knocked to edges, otherwise a very good, clean copy in a very good unclipped dust-jacket, which is lightly sunned to spine, and now in a clear plastic protective cover.

Toronto: Centre for Medieval Studies by the Pontifical Institute of Mediaeval Studies, 1974. 8vo., pp.(v),107, paperback; from the library of D.E. Luscombe, with small inscriptions to prelims, light pencil scoring to margins, light sunning to spine, with light rubbing to extremities, internally fresh and otherwise very good.

Gainsville: University Press of Florida, 1993. 8vo., pp.xv,288, red hardcover, gilt, 4 b/w plates; very slight soiling to edges, very slight rubbing to extremities, head and tail of spine very lightly creased, a very good copy indeed.