In all honesty, I don't remember if I did these alone, coming up with the ideas in them by myself, or after a brief discussion with Kevin about plans for the three-parter. I kind of think it is the former, but at this late date I can't be sure. However, one of them I'm pretty sure about -- the notes for the concept of the "colony worms" that the Foot employ to ressurect the Shredder. That was all my doing.
First up is a VERY brief overview of the three parts of the story, along with my original doodle conceptualizing the three monstrous resurrection failures -- sometimes referred to as the "Shredder clones" -- that the Turtles have to fight when they invade Foot headquarters.

Next are my notes about the "colony worms".

Next, some rough thumbnail layout sketches done by me for the first part of "Return to New York". I'm not sure why I drew these -- if memory serves, Kevin laid out that issue.

Last, here are some notes I made on the first part of "Return to New York". One little thing that I find interesting is the note about the dividing up of the original pages.

I found a few more things in that sketchbook (not related to "Return to New York") that I will probably post in the coming days or weeks. -- PL