I stumbled upon this by accident, but last year, a local Vegas affiliate remembered the time
Hollywood Squares taped at the Riviera. They included a
brief article with video clips and
slideshow with behind-the-scenes pictures. It's nothing earth-shattering, and turns into an interview with singer Pia Zadora, but the pictures are pretty cool.
I don't recall seeing Scott Baio in any episodes on Youtube, either, so there's that.
/I'll refrain from making political jokes