Ah, the Toon Platoon script! I remember reading this a year or two ago! Glad to see it again. (Not sure it was ever really lost?)
I'll admit I'm kinda glad it never got made. It's... weird. If memory serves, it was scrapped because Spielberg didn't want to do anything comedic with Nazis, having just done Schindler's List.
Now, all we need is anything from that scrapped prequel that floated around in 2013. The Stooge, I think it was called? That was the one with Mickey Mouse.
Oh, oranything from that scrapped Roger Rabbit short. Hare in my Soup. There might've been more scrapped shorts, but that's the one that came the furthest along.
... The world has not been kind to Roger Rabbit media.