Many of the references used regarding cave sites given in these posts are sourced from two worthy tomes, in particular NGRs and descriptions, these references are mostly taken from;
Barrington, N. and Stanton, W. 1977 (3rd revised edition) Mendip: The Complete Caves and a view of the hills. Cheddar Valley Press.
Irwin, D.J. and Jarratt, A.R. 1999 Mendip Underground: A Cavers Guide. Bat Products. I have many different issues of this volume but only one signed ‘Cheers Vince’ by J’Rat and given to me after digging him out of a boulder collapse in Stock’s House Mine Shaft – a very fine man indeed and sorely missed!