Magni Ducatus Lithuaniæ, 164517th century, 5–6 decade, Map of Lithuania/Poland description Magni Ducatus Lithuaniæ 1645 Willem Blaeu – Hessel Gerritsz (engraver): “Magni Ducatus Lithuaniæ,” Amsterdam, 74.6 x 105.0 cm. Originally a Radvilas commission, with added river maps by Tomasz Makowski. Year 1645 Author Willem Blaeu Sources www.swaen.com