Tintagel Castle by C. A. Ralegh Radford (1972) HMSO blue book guide inc. 2 maps

1972 Neuschwanstein Castle: Official Guide by Petzet & Hojer - English, PB

Harlech Castle by Charles Peers & W.J. Hemp (1936) HMSO Guide

Stirling Castle: Official Guide : HMSO 1972

Dunstanburgh Castle by C.H. Hunter Blair & H.L Honeyman (1955) HMSO guide

Militia, Yeomanry and Volunteer Forces of the East Riding 1689 - 1908 PB + East

Caerlaverock Castle by B.H. St. J. O'Neil (1952) HMSO blue book guide inc. map