Not my listing, nor do know the seller, but this interesting, it's advertised as signed by the founder of MRI. My understanding was the founder is Mike (Myke?) Bergenske, but that's not the first name in the signature.

https://www.ebay.com/itm/Vintage-Mo...AAOSwXIheQKa Q

I've attached screenshots of the photos here.

Attached Thumbnails

     

__________________
Paul
If we weren't all crazy, we would go insane - Jimmy Buffett
NAR #87246 www.wooshrocketry.org