* [http://outpastthemoat.tumblr.com/post/39490124612 the symbolism of castiel’s favored heaven] by outpastthemoat
* [http://mischievousart.tumblr.com/post/56911784246/proportion-how-your-eyes-trick-you-into-thinking Proportion: How your eyes trick you into thinking Cas is shorter and thinner than he actually is] by mischeviousart
* [https://amwritingmeta.tumblr.com/post/181174935300/14x08-cas-and-his-shadow Cas and his shadow] by amwritingmeta
==='''Other Characters'''===