Does anyone know where i could access copies of NOLSPEC (North Lonsdale Speleological Club) reports? I am specifically seeking Volume 4 Book 4 but am interested in see any other volumes. I have already tried the RRCPC and BCRA libraries.
Thanks

Grampian don't seem to have any listed.

Maybe British Caver or Cave Science can shed more light:
https://northerncaves.co.uk/caves/details.php?id=2089

Or try to trace the cavers named in previous Hazelgrove thread. Doesn't help that it seems to have been known as Speleological / Speleo Club / Group / Society & Caving Club (& variously list as NOLSPEC, NLSC, NLSS & NLCC)

The only other online reference I can find to their reports is in dodgy links to the book Ingleton Coalfield by John Bentley, which is better sourced from:
https://www.nmrs.org.uk/publication/ingleton-coalfield/

Did you track down any old members? I had a look at the British Caver article & it didn't name any one else, but did refer to NOLSPEC newssheets (author - Ray L. Bland)