These two websites are hosted by Simtropolis and as they are started to have ongoing technical issues its been decided to copy as much of the contents as possible over to Simtropolis

http://www.sc3000.com/

http://www.sc4ever.com/

See the STEX for the files and the Omnibus for the articles

https://community.simtropolis.com/files/

https://community.simtropolis.com/omnibus/simcity-4/reference/omnibus-sitemap-draft-only-r571/