Similarily, there are lists of dates of periods of history, or areas of history, such as religion or science or ancient Rome, but it is hard to find an overall list of basic dates. This is not to say that no-one has compiled such material, there are amazing projects, such as this one, but it has yet to be scanned online in a useable format. In contrast to geological and cosmological timelines, which are frequently found, including in open source license, on the web, there is suprisingly little usable graphical content on Human History.
