( 1) Ordnance Survey Map (Scale / Date)
OS 25" 1895
|
( 2) List of Buildings of Special Architectural or Historic Interest
DOE (HHR) Plymouth Devon 1975 Page(s)173
|
(3) Fortress Study Group Fort : the international journal of fortification and military architecture
4, 1977 Page(s)84
|
(4) List of Buildings of Special Architectural or Historic Interest
City of Plymouth, 09-Nov-1998
|
(5) Andrew Pye and Freddy Woodward 1996 The historic defences of Plymouth
Page(s)113-4
|
(6) Scheduled Monument Notification
09-NOV-1998
|