This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Friedrich Christoph Perthes sephia. Friedrich Christoph Perthes Brsenverein des deutschen Buchhandels Der deutsche Buchhandel und die geistigen Strmungen der letzten hundert Jahre before author Public Domain erklrt durch Brsenverein auerdem PDalt PDold Original upload log de Ireas CommonsHelper page de FriedrichChristophPerthes