Pre-2016 :
http://artscool.cfa.cmu.edu/~johnson/nutshell/
http://artscool.cfa.cmu.edu/~johnson/The_Full_Works.html
Vimeo:
https://vimeo.com/andrewellisjohnson/videos
Pittsburgh Artist Registry:
https://www.pittsburghartistregistry.org/accounts/view/AndrewEllisJohnson