Alan Moore's Youngblood proposal
In the late 90's, Alan Moore became the writer for Rob Liefeld's superhero team book Youngblood. As should come as no surprise, he drastically revamped the whole thing. This is the series outline Moore wrote up before starting on the book, in which he details his approach and plans for the title. It's a series bible of sorts, basically.
And for legality, there's three pages from Moore's time on the title itself, featuring a nifty take on superspeed.
And, for legality:
Also, Moore's script for a never-published issue of Youngblood is apparently available online: http://www.beaucoupkevin.com/youngblood_4_script/pages/youngblood_4_script_0001.htm. Once again, I'll reiterate that the fact that Liefeld of all people is to this day sitting on top of Moore scripts that have never seen the light of day... well, it just makes you want to weep.