Seutter, Matthaeus.  "Diversi globi terr-aquei statione variante et visu intercedente, per coluros tropicorum, per ambos polos et particul."  Map.  1730.  Norman B. Leventhal Map & Education Center,  https://collections.leventhalmap.org/search/commonwealth:x633f8840 (accessed October 22, 2018).