There's nothing quite like the Internet Archive Wayback Machine. For sufficiently recent dates, web caches can serve a similar purpose. Some of those can be ac

There's nothing quite like the Internet Archive Wayback Machine. For sufficiently recent dates, web caches can serve a similar purpose. Some of those can be accessed conveniently using the Firefox plugin "Resurrect Pages" (https://addons.mozilla.org/en-us/firefox/addon/resurrect-pages/ https://addons.mozilla.org/en-us/firefox/addon/resurrect-pag...). You can preserve the present version of a site for yourself. No tool will work for all sites, but some tools will work well for many sites. WebHTTrack is good. It will record the address and date of each capture.