Hi!! Glad I found this topic about all those page for The Sims 1 custom content. What I noticed is that some of the content was hosted in yahoo groups (not working anymore). While doing some research I found this page (not sure if it was mentioned before):
https://andrevasims.tumblr.com/post/187881457473 but inside that post there is a page where a group of people was able to share the files from all those yahoo groups:
http://treasuredtwice.space/index.html
The sad part is that they did not posted pictures about the contents of the download, but I think it will worth downloading and see what stuff is in there.
With this page I was able to find some custom content from the simapartments yahoo group and finally install the apartment lot from woobsha.
I hope this information helps you.
Happy Simming!
(Sorry for bad english
)