The background map is courtesy of the University of Texas Libraries, The University of Texas at Austin. (To be exact, it comes from http://www.lib.utexas.edu/maps/europe/greece_rel_1996.pdf, which is available without any copyrights, according to http://www.lib.utexas.edu/usage_statement.html?maps=yes.)

Additional information comes from the excellent map at http://www.bueker.net/trainspotting/map.php?file=maps/greece/greece.gif.

I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.