- Information on the peyote cactus (Lophophora williamsii).www.erowid.org/plants/peyote/peyote.shtml
- Aldous Huxley's full, classic account of his experimentation with mescaline and LSD.www.psychedelic-library.org/doors.htm
- Information for shamanic sacraments, history of mescaline, cources, dosage and preparation, and the high.mescaline.com/exp/index.htm
- Risk and realities of mescaline and peyote from the Do It Now Foundation.doitnow.org/pages/133.html
