The sheet histories of the ordnance survey one-inch old series maps of Devon and Cornwall with parts of Somerset Dorset and Glamorgan /
Messenger, Guy.
Charles Close Society for the Study of Ordnance Survey Maps.
London : Charles Close Society,
1991.
"Revision of the cartobibliography in Vol. 2 of H. Margary's Reproductions."
Great Britain. Ordnance Survey.