Map drawn by the Anglo-French archaeologist, settled in Mairena del Alcor (Seville), George Bonsor, after one of his several expeditions to the Guadalquivir delta area (the last one of them along with Adolf Schulten), in search of the site of the legendary city of Tartessos. The map was included in Bonsor's book "Tartessos", published by the Spanish Royal Academy of History in 1921. (Document on loan by commodate from the City Council of Mairena del Alcor).