Incomplete set of booklet photos from a random auction, for verification:
I can't quite make out the family name of the second member of EUR; first character looks like 志 but no real guesses on the second
YOKO JK explicitly names Masanori Adachi as part of EUR on her site, so I guess he's "Grand Master Technology" lmao
https://yokojk.wixsite.com/yokojk/history