Clark, George T. Mediaeval Military Architecture in England. 2 vols. London: Wyman & Sons, 1884.
Westmorland
Clark, G.T. 'The Castles of Brough and Brougham.' Transactions of the Cumberland and Westmorland Antiquarian and Archaeological Society os 6 (1883): 15–37.
Clark, George T. Mediaeval Military Architecture in England. 2 vols. London: Wyman & Sons, 1884.
Kent
Clark, George T. Mediaeval Military Architecture in England. 2 vols. London: Wyman & Sons, 1884.
Shropshire
Clark, George T. Mediaeval Military Architecture in England. 2 vols. London: Wyman & Sons, 1884.
Sussex
Clark, George T. 'The Castle of Lewes.' Sussex Archaeological Collections 34 (1886): 57–68.
Clark, George T. Mediaeval Military Architecture in England. 2 vols. London: Wyman & Sons, 1884.