Just for the record: this isn't some sketchy R-rated section for those 18 and over. The heading merely indicates that these aren't titles of a specifically "educational" nature, in the sense that they'd fit well into a K-8 curriculum. That said, you probably don't want your kiddos reading Intellectuals by Paul Johnson.
We believe it's important for parents to know at least as much history as their children, especially during a child's formative years, and especially especially if you're teaching him or her at home. This isn't just so you can answer questions more easily—how can we impart a sense of the trajectory of the human story to our kids if we have a truncated or incomplete view ourselves?
A lot of the books here aren't "comprehensive" in the sense that they span continents and epochs. Many of them are, but the point isn't to give you the whole picture, but to fill in gaps and make connections. Plus, history is just plain interesting, and while it's still beneficial, reading about the Chinese dynasties or the first overland railroad is as fun as it is instructive.
These aren't primarily "literary" histories. Many excellent writers are represented, but most of them are first and foremost professional historians, and they approach their subjects as academics and scholars rather than artists. Sadly, the two have grown increasingly apart since the days of men like Hakluyt and the Venerable Bede.
Have fun browsing our collection. It's construction has been less intentional on our part than that of many other categories, but we haven't chosen anything that looks boring, weighted too heavily against (at the least) a fairly conservative worldview, or treats topics best unconsidered. While we specifically designate "adults" as the prime beneficiaries of this section, many high schoolers would be just as comfortable and have just as much fun here. If you think learning shouldn't be fun, we could surely find you some really dreary titles if you ask nicely.