I have the feeling you are going through all steps of an emulation person. :D I've seen your previous posts, its kinda funny. (No bad faith by me, just thinking back to my days...)
I didn't know links to Rom sites is allowed here. You can search for results of archive.org like with mario site:archive.org . But there are really amazing Rom sites, some of my favorites:
I know. I used Vimm too, and still do for very certain stuff. Being in emulation scene since over 15 20 years and only discovered Vimm last year, lol. This wouldn't be the first major site we lose. Whatever happens, there will always be such sites. So don't worry, Nintendo can't fight entire world, nor want they.