I don't have any spare copies and am still searching for some myself from the early years.
If you are a member of the CSC you might find some spare copies with the Librarian John Aitchison. I purchased some from him 2 years ago for £1 a copy, which is quite a bit cheaper than you'll find on eBay
, where they can be found on a daily basis.
Putting together a long run is not easy.
You will find from time to time at Philatelic Literature specialists 'hh sales' and they have 4 years hardbound on offer now at very reasonable prices.
Sorry I cannot help further but if I see anything, will update for you.