1749 – Die Hertzogthümer Curland und Liefland by JG Schreibern | Source: http://commons.wikimedia.org/wiki/File:Die_Hertzogth%C3%BCmer_Curland_und_Liefland.jpg
1818 Pinkerton Map of Poland – Geographicus | Source: http://lithuanianmaps.com/Maps1816-25.html
1817 Poland by John Thomson | Source: http://lithuanianmaps.com/Maps1816-25.html