edited with an introduction by Warner Berthoff. edited with an introduction by Michael Newton. edited with an introduction by Robin Skelton. edited with an introduction by Andrew Sessa. edited with an introduction by Trevor Boddy edited with an introduction by W.H. Brock. edited with an introduction by Alan Ziegler. edited with an introduction by Caroline Holmes edited with an introduction by Ira Dworkin. edited with an introduction by J.B. Steane.