This index linking to old encyclopedia volumes (by letter) dated from 1728 to 1926 may be of interest for checking out (summary versions of) understandings over time.<p>The submission is inspired by other encyclopedia-related links that have been submitted recently [0, 1].<p>[0] <a href="https://news.ycombinator.com/item?id=36967579">https://news.ycombinator.com/item?id=36967579</a>
[1] <a href="https://news.ycombinator.com/item?id=36954279">https://news.ycombinator.com/item?id=36954279</a>