I created these myself in AutoCAD recently. I'd be happy to recreate the "To Be Continued" graphic as well if there's enough interest in my doing so.
Back to the Future
http://www.imagebam.com/image/aa5972341802151
Back to the Future Part II
http://www.imagebam.com/image/7a3aa3341802154
Back to the Future Part III (Poster Version)
http://www.imagebam.com/image/f30025341802156
Back to the Future Part III (Film Version)