What a neat story! You've got some excellent history right there. I'm sure your father in law has plenty of great stories to tell of his time on the MD show back in the day. Just last week I watched a clip of KISS on the MD show. After KISS played their song Gene came over in full dress to talk with Mike and the other guest. No one knew quite what to make of him... Hilarious stuff.
Best wishes with the sale if he does decide to go that route. Thanks for sharing the story and pictures.