SGX Engine-You are doing God's work, thank you. What a treat it is to see all these old printings again, and some are even new to me. Print is forever.
I don't know if it will help your arduous task at all, but there is a playlist on my YouTube channel titled 'Retro Magazines'. I went through every issue of ZERO, C+VG (Mean Machines section), Sinclair User, ACE, RAZE (they covered the PCE heavily) and The Games Machine (what a magazine) and anything PCE will be shown. Although way too small to read/enjoy and thus screen grab, the videos are there for a reference anyway, if needs be, for those mags.
JAPJAC - Thank you for mentioning your YouTube channel.
The 'Retro Magazines' playlist is making what I wanted to do, in finding PCE articles, considerably easier, it's excellent as a reference.