This section of the website contains the appendices from the published version of The Killing Age. In addition, you can explore many supplementary materials, including extensive raw data. Much of this raw material is in EXCEL. In some instances, I have included the relevant URL, for example https://www.slavevoyages.org/ where you can access the extraordinary labors of dozens of scholars. Many of the graphics are interactive, thanks to the work of the Ph.D. student Bradley Erickson. By passing your cursor across a given visualization, for example, you will be able to see the actual numbers. Or, if you would like, you can specify a given world region or period.