By Mike Hitches
By Sager, Peter
By Great Britain: Welsh Office
By Troughton, WILLIAM
By Evans, John, Stoddart, Gabrielle
By Hirst, Derek
By Sylvester, Dorothy
By Charles Kightly, David M. Robinson
By Senior, Michael
By Carl Lofmark, G.A. Wells
By Breverton, Terry
By Williams, C.J.
By Welsh Historic Monuments
By Jones, Bedwyr Lewis
By Davies, R. R.
By Jones, J. Gwynfor
By Carr, A. D.
By Glanmor Williams, Williams, Glanmor
By Dodd, A. H.
By David Ross
By Fisher, Deborah C.
By Sloan, Roy
By William Howarth, C.P. Rodgers
By Matar, Nabil
By Jenkins, Geraint H.
By Wales Tourist Board, Robinson, David
By Vaughan-Thomas, Wynford, Brabbs, Berry