Unfortunately, I couldn't find a credit for the piece anywhere in the magazine although there is a signature (which I can't decipher) bottom-right.
The newsletter itself was a 100-page black & white (with glossy colour cover) A4 letterbox-buster only available to club members. There's more fan-pleasing stuff in one issue of the newsletter than all the eighties Marvel magazines combined.
The show was going through something of a renaissance at the time thanks to the BBC VIDEO releases (£10.99 for a tape with two episodes... what were we thinking?!?) which included a plug for the club on every sleeve. It was those VHS tapes that reacquainted me with the show (and drained my wallet) and led me to sign-up for the club.
I've got more B7 posts planned for the future.