Here are a few more things from that sketchbook, related to the fifteenth issue of the original TMNT comic book series. First are two pages of notes I made about the story.
(I'm not sure why that note about the vinyl-eating alien creatures is in there -- it's possible, I suppose, that I was considering working that idea into the plot of this issue, though at this point I don't remember how.)
This other page contains some sketches of Dr. Dome and his Domeoids, done when I was trying to work out what they should look like. -- PL