Paper Based Level Design Research

Next class well be starting on paper based design so I started researching on it.
I found some cool stuff to start reading about.

First I found a some stuff on tumblr that I will post here later on.

UPDATE

Here are the links that I've found.

http://www.tumblr.com/tagged/level-design?before=1329171407

http://cooper-adam-pdgdy1.blogspot.co.uk/2011/11/paper-based-level-design.html

http://www.worldofleveldesign.com/categories/level_design_tutorials/how_to_plan_your_next_map/how_to_plan_your_next_map.php

Ch-check em out!