With the type of project you're doing, having information about the site or people you're working with/creating for is important. Here are some places to get this type of raw data.
Note: I've included a lot of government websites here. It's wise to investigate the context of your project in the country/world you're in. Be aware, however, that government websites (and organizations) are functioning under their current administration. As far as the US is concerned with this administration (and probably others in the past), they have been known to make changes to government websites to better reflect their agendas (see this recent issue with the CDC's website!). Just something to be aware of :)