The images of the Sacred Chao and the Illuminati Eye-in-the-Pyramid On Fire in the letter were later incorporated into the 4th edition of the Principia Discordia.
Origin art found, Hail Eris!
![March 15, 1971 letter from Louise Crowley to Greg Hill.](http://historiadiscordia.com/wp-content/uploads/2016/06/19710315-letter-louise_crowley-to-greg_hill-ides_of_eris-645x1024.jpg)
containing some source art for the Fourth Edition of the Principia Discordia.