A stunning and rare 1809 map of Mobile Bay, Alabama by the Spanish maritime cartographic agency, La Dirección Hidrográfica. Oriented to the west, this map covers all of Mobile Bay from the French city of Mobile to the entrance to the Bay and from Dauphin Island to Oyster Bay. The map identifies lights at the entrance to the Bay and provides depth soundings throughout. There is some inland detail, particularly along the river systems that drain into the Bay.

This map was published in 1809 by La Dirección Hidrográfica as part of the magnificent four part Portulano de la America Setentrional. The cartography is based upon earlier Spanish and French exploration of the Bay. This map is very rare and one of the earliest high quality scientific mappings of Mobile Bay.