http://www.theaterscene.net/plays/the-erlkings/archive/
http://www.theasy.com/Reviews/2014/E/theerlkings.php
https://www.facebook.com/erlkingstheplay/
https://ermineproductions.com/the-erlkings
https://twitter.com/erlkingstheplay
https://www.kickstarter.com/projects/1084213722/the-erlkings