Continuing on with interesting tidbits found in that same sketchbook -- here is the rough pencil sketch I drew while working out the design for the cover of issue #15 of the original run of Mirage TMNT comics.
For anyone who wants to see what the cover ended up looking like when penciled, inked and colored, I posted two images of it back on March 4, 2009.
Blast from the Past #84 repost: TMNT Vol. 1 #15 "clean" cover
Eagle-eyed readers might be able to see faint hints of a drawing of the Fugitoid peeking through the image of the rough pencil cover drawing -- darn that cheap sketchbook paper! -- PL