Gracie and Zarkov explained

Gracie and Zarkov were pseudonymous writers who documented their use of dimethyltryptamine and other psychedelic tryptamines and phenethylamines.^{[1] [2]} Their experiences were documented in self-published papers, as Notes from Underground,^[3] and in articles published in outlets such as Mondo 2000, starting from ca 1980s. According to Sisters of the Extreme: Women Writing on the Drug Experience, Gracie's name was chosen in homage to Gracie Allen, Grace Slick, and the "gratuitous grace" that Aldous Huxley found in the psychedelic experience.^[4] Zarkov is a likely reference to the fictional professor Hans Zarkov from Flash Gordon.

Notes and References

1. Web site: Gracie and Zarkov files at Lycaeum.org . 2013-02-04 . 2014-02-21 . https://web.archive.org/web/20140221145324/http://www.lycaeum.org/drugs.old/other/gandz/index.html . dead .
2. Web site: A Tryptamine Expedition, Deoxy.org website . 2008-03-09 . https://web.archive.org/web/20080304143058/http://deoxy.org/gz_texp.htm . 2008-03-04 . dead .
3. https://docs.google.com/viewer?a=v&q=cache:qQc7dpSBd9sJ:www.erowid.org/library/books_online/notes_from_underground.pdf+%22gracie+and+zarkov%22&hl=en&gl=us&pid=bl&srcid=ADGEESh8Xc0dfZYw14YoAWShZMIqeSBuJDYDO_MUYRtamG2XI7GZp4pivBLQcTyUgLjr66pqpPeabp63ObeKc7nLEvq8-MMJJh__tpPZO4PK3shNdLjKBH3Xt-HiASSiTfUumv6-sSG6&sig=AHIEtbSH21aMko8WyYpG-bNgJ1t-tJcXlQ Notes from Underground at Google.docs
4. Book: Sisters of the Extreme: Women Writing on the Drug Experience. Palmer, Cynthia . Michael Horowitz . 2000. Park Street Press . 280. 0892817577.