for our initial foray into the web archive analysis, we examined the metadata about the web objects as opposed to the web objects themselves. Our determination was that this approach would afford us a high-level view of the archive and a solid foundation from which to build out future analyses

https://blogs.loc.gov/thesignal/2019/01/the-library-of-congress-web-archives-dipping-a-toe-in-a-lake-of-data