( 1) Ordnance Survey Map (Scale / Date)
OS 6" 1954
|
( 2) General reference
Trans Lancashire Cheshire Antiq Soc 70 1960 74-83 photo plan sections (J. Forde-Johnston)
|
( 3) Field Investigators Comments
F1 TPW 15-JUN-64
|
( 4) Field Investigators Comments
F2 DJC 23-FEB-76
|
(5) General reference
English Heritage Scheduling Amendment 23/9/93
|