Re: losing BBS/source from the 90's -- I was fortunate enough to regularly back things up to QIC tape, and lo and behold, 22 years later a hacked up box restored the BBS perfectly and it ran in DosBox on my laptop. I was pleasantly surprised that it all worked immediately. Hardest part was finding parts for a floppy tape and installing the right Windows version. Seeing the ANSI art made it all worth it...