Re: Credit to Real Estate information source?
I would personally contact the publication, asking them where they archive the article, as most likely that's what they are doing.
Also offer your suggestion:
Copying the article in it's entirety while giving credit to the source, along with author, and a link to where it's hosted.
I personally think they just archive them somewhere else on the site. Maybe recommend to them, if they are doing that, to 301 the old link to the new one, so people can link to their articles without problems?
If you're not remembered, you never existed.