Interdope: LSD section
- Virtual LSD trips, trip stories, and facts about the drug.
- http://www.interdope.com/LSDHUVUD.HTM

Drug Enforcement Administration: LSD in the United States
- The official US DEA website on LSD.
- http://www.fas.org/irp/agency/doj/dea/product/lsd/toc.htm

Stain Blue: Albert Hofmann
- About Dr. Albert Hofmann, who first synthesized LSD. Includes chemical information and diagrams.
- http://www.stainblue.com/ah.html