Freelance web designer/developer here. I did a simple responsive website for a consulting firm two months ago and kept a link to it on my portfolio for reference; only to find out later that the client has ruined everything that's great about the site. It's no longer crossbrowser compatible, had unnecessary chunks of text, etc. I was wondering if there's a way I could approach him about this. This entry on my portfolio is really valuable to me.
You could also try to use Wayback machine (http://archive.org/web/) to display a version before it was ruined / initial