Yeah, Shulgin's a bit of a hero to me, I guess. He operated a private laboratory in California with a legitimate DEA license to deal with Schedule I substances. He set about characterising and developing the class of drugs known as phenethylamines (including MDMA, MDA, MDEA, amphetamine, methamphetamine, 2-CI, 2-CB, etc, etc.). He is responsible for "rediscovering" MDMA and bringing it into the public conscience in, I believe, the late 70s. (The German pharmaceutical company Merck discovered it around the time of the start of WW1 while searching for a precursor substance to something else that escapes my memory. They saw no use for MDMA and subsequently shelved it.) He also has invented literally dozens of phenethylamines, many of which have psychoactive properties. He and his wife Ann published Phenethylamines I Have Known And Loved (PIKHAL) basically as an open source book available to all (knowledge for knowledge sake sort of thing). Eventually the DEA raided him and retracted his license.
Didn't stop him from publishing the sequal, Tryptamines I Have Known and Loved (TIKHAL), a similar work on the tryptamines (psilocybin, DMT, etc.).
Both contain subjective notes on the physical and mental experience of consuming god knows how many numbers of experimental (and some now common) substances, chemical facts about the substances, and detailed synthesis instructions.
Both books are available in their (I believe) entirety at Erowid for free.
PS. It wasn't him that moved it to the clubs, BTW, he was interested in exploring their mental and therapeutic potential. It was largely in Texas that MDMA made the jump to the clubs (after being distributed for religious purposes by a progressive minister in vast quantities).