ViceGripX sent me a link to an eBay seller from whom he'd recently gotten a pencil drawing of Jazz from the G1 cartoon. He didn't recall which episode it was from. The production number written on the drawing was 700-03, which was the Marvel Productions number for "Divide and Conquer," but it doesn't match any Jazz scenes in that episode (he was barely in that one, actually). I checked to see what else the seller had, and none of the scenes look familiar to me:
http://tinyurl.com/G1-cels
I'm guessing what he's got are drawings that were storyboarded, but never animated? Even the situations I recognize (like Soundwave in his Cybertronian mailbox mode, or Brawn with his I'll-get-you-loose-Huffer-don't-panic cutting torch, don't match the drawings of the characters as they actually appeared in the episodes. Something else of note is that both Autobots and Decepticons in these drawings are saddled with a generic insignia, neither Autobot nor Decepticon but something in the middle.
Anyway, I just wanted to share, since the artwork is interesting, even if I don't think any of these drawings made it into the finished G1 series. (It's possible they all ended up in a discard pile, which is how the seller got ahold of them.)
Zob