Europe Roads: Shapefile of vectors of roads (highways) in Europe. Again, the coordinate system is Clark 1866 ellipsoid, use the same proj4 as above.
Ancient and Modern Athens/Piraeus: Shapefile discussed in class of ancient Athens and Piraeus with walls compared with modern Athens and Piraeus. To reconstruct the files, start with these images. To open the .qgs file, be careful to edit the directory of the shapefiles to where these downloaded files are saved.
CFS Data: Data on locations of the centroids of CFS defined regions, as well as data on bilateral trade between CFS regions via road, rail, and air. Data taken from Allen Arkolakis 2014.