Hi John and Doves,

Hi JMC,  The Home Page for the maps you are enquiring about is at
http://www.maphistory.info/index.html
http://db.lib.unimelb.edu.au/mrsid-cgi/map_view.cgi

Unfortunately, I can't remember who posted it either, but
I saved one image of the map showing  Gog/Magog as below

http://db.lib.unimelb.edu.au/mrsid-cgi/map_view.cgi?initview=yes&get_title=965004783&client=walker_collection&image=w042_20_5.sid&browse_by=AUTHOR

As indicated it is listed under the Walker Collection by William Hole

Hope this helps.  God Bless EAR