In 2005, Hopper founded Diogenes Press, publishing a new, expanded edition of The Heathen's Guide to World Religions. In 2008, Hopper worked with Eris Publications to produce the current "New World Order" edition. The most recent edition was published in 2011.
Hopper initiated Diogenes Press in 2005, releasing an updated and expanded version of The Heathen's Guide to World Religions. Two years later, Hopper partnered with Eris Publications to produce the "New World Order" edition, which was published again in 2011.