https://pubchem.ncbi.nlm.nih.gov/compound/5761

Chemistry and pharmacology of lysergide (LSD).

https://pubchem.ncbi.nlm.nih.gov/compound/10624

Chemistry and pharmacology of psilocybine.

https://pubchem.ncbi.nlm.nih.gov/compound/4076

Chemistry and pharmacology of mescaline.

https://pubchem.ncbi.nlm.nih.gov/compound/128563

Chemistry and pharmacology of salvinorin A.

https://pubchem.ncbi.nlm.nih.gov/compound/6468

Chemistry and pharmacology of phencyclidine (PCP).

https://pubchem.ncbi.nlm.nih.gov/compound/3821

Chemistry and pharmacology of ketamine.

https://www.drugabuse.gov/publications/drugfacts/hallucinogens

National Institute on Drug Abuse site for hallucinogens: LSD, peyote, psilocybin, PCP.

https://www.youtube.com/watch?v=kvalFfavNpU

Video illustrating the effects of LSD on the brain.