I've been on the Drome almost the entire run of the 2K3 series and I don't think we've had a topic yet that detailed every issue each episode is based off of. I thought it would be quite fun to give it a shot. I own every turtles comic out to date and almost every trade, I have all the stuff just printed in trades however, so I find myself qualified to start this.
I would love help from any other avid turtle scholars though. I'd like to go in order so first up is season 1.
Episode 1: Things Change
Volume 1 #1
http://www.ninjaturtles.com/comics/m...me01/01/01.htm
Volume 4 #1
http://www.ninjaturtles.com/comics/m...me04/01/01.htm
Episode 2: A Better Mousetrap
Volume 1 #2
http://www.ninjaturtles.com/comics/m...me01/02/02.htm
Episode 3: Attack of the Mousers
Volume 1 #3
http://www.ninjaturtles.com/comics/m...me01/03/03.htm
Episode 4: Meet Casey Jones
Raphael #1
http://www.ninjaturtles.com/comics/m.../raph/raph.htm
Episode 5: Nano
New story
Episode 6: Darkness on the Edge of Town
New story
Episode 7: The Way of Invisibility
Foot Tech Design
Volume 4 #4
http://www.ninjaturtles.com/comics/m...me04/04/04.htm
Episode 8: Fallen Angel
New story
Episode 9: Garbageman
New story
Episode 10: The Shredder Strikes, Part One
Volume 1 #1
http://www.ninjaturtles.com/comics/m...me01/01/01.htm
Episode 11: The Shredder Strikes, Part Two
Volume 1 #1
http://www.ninjaturtles.com/comics/m...me01/01/01.htm
Episode 12: The Unconvincing Turtle Titan
New story
Episode 13, 14, and 15: Notes from the Underground
New story
Episode 16: The King
Donatello #1
http://www.ninjaturtles.com/comics/m...01/don/don.htm
Episode 17: Shredder Strikes Back, Part One
Leonardo #1
http://www.ninjaturtles.com/comics/m...01/leo/leo.htm
Episode 18: Shredder Strikes Back, Part Two
Volume 1 #10
http://www.ninjaturtles.com/comics/m...me01/10/10.htm
Episode 19: Tales of Leo
New story, unsure on this one I almost feel I've read this but I can't remember.
Episode 20: Monster Hunter
Loosely
Volume 1 #11
http://www.ninjaturtles.com/comics/m...me01/11/11.htm
Episode 21: Return to New York, Part One
Loosely - Volume 1 #19
http://www.ninjaturtles.com/comics/m...me01/19/19.htm
Volume 1 #20
Episode 22: Return to New York, Part Two
Volume 1 #20
http://www.ninjaturtles.com/comics/m...me01/20/20.htm
Volume 1 #21
http://www.ninjaturtles.com/comics/m...me01/21/21.htm
Episode 23: Return to New York, Part Three
Volume 1 #21
http://www.ninjaturtles.com/comics/m...me01/21/21.htm
Episode 24: Lone Raph and Cub
New story
Episode 25: Search for Splinter, Part One
Volume 1 #4
http://www.ninjaturtles.com/comics/m...me01/04/04.htm
Episode 26: Search for Splinter, Part Two
Volume 1 #4
http://www.ninjaturtles.com/comics/m...me01/04/04.htm
There you have it season 1. Please feel free to inform me of any corrections that you see. It has been awhile since I've read through the whole run and even longer since I've seen some of these episodes. I'm doing all this through memory.
Next up is season 2!