Kodeks - The German Medieval Slavistics Server
Cultural History Bulgaria: Historical Map of Plovdiv
Kulturgeschichte Bulgariens: Historischer Stadtplan von Plovdiv (Philippopel)
Map of Plovdiv (Philippopel) from 1908 ("Meyers Reisebücher")
Kodeks - The German Medieval Slavistics Server
Cultural History Bulgaria: Historical Map of Plovdiv
Kulturgeschichte Bulgariens: Historischer Stadtplan von Plovdiv (Philippopel)
Map of Plovdiv (Philippopel) from 1908 ("Meyers Reisebücher")