The Geospatial Historian is “a tutorial-based open access textbook for historical scholars and digital humanists designed to teach practical digital mapping and GIS skills that are immediately useful to real research needs.” Under Lessons, you will find two series of GIS tutorials geared towards historical analysis and applications. The first series, which uses open-source software, is comprised of four lessons that the project team created for the Programming Historian. The second series contains five lessons that teach mapping, georeferencing, and other applications using ArcGIS. The site also offers a helpful list of resources for Finding Spatial Data, organized by data type and featuring data from around the world. Check it out!