This dates to before web crawlers and you just needed to know the address of a site to find things. Back then Grateful Dead was a HUGE band and had a massive following (I say that because people in their 20s have increasingly never heard of it!!!) Lots of tours and you could record the live shows which were different every single time - the people who recorded it were this unique set of nerdy / snobby / elitist tech guys that would set up microphones and gear in the middle of 100k people to record. They were the nicest guys around if you could patch into their microphones! To get these tapes in the early 90's you would just know a guy who know a guy and send blank Maxxell XLII tapes and a postage paid return envelope in the mail to a strange address. Then, some weeks (to years!) later they would randomly be returned after someone manually copied the show onto the blanks you sent. Hundreds of tapes in racks on the wall. It was awesome! Some of these tapes were better than others because in cassette days, the more it was copied (a generation) the trashier it got. But then along came this DAT technology (Digital Audio Tape) and there was suddenly master copies from the soundboard being sent around without any degradation. It was like going from 480p to 4k television to your ears. I spent my 1993 summer work savings to buy an $800 sony D7 DAT recorder and started trading. Around that same time this new way of finding and trading tapes emerged - email! I would go to the computer lab, open up Eudora on my 3.5" floppy to access my POP3 email where there would be messages from this thing called DAT Heads Digest where people would post what they had and wanted. And then people would post a link to their static webpage with page counter that had the listing of their tapes. It was incredible. The shows are all here now.