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The arrows on this map show the direction of the seasonal monsoons of Southeast Asia during the late 18th century. Each arrow has a label in French, indicating the month. The hatched sea areas are where the winds always blow in the same direction.

This mid-18th century map features labels noting the local populations, including the Kemois of the mountains and deserts of Cochinchinae (Vietnam) and the Byayos of Borneo. The map’s cartouche is embellished with maritime and military paraphernalia.

This map features a label noting that the Byayos people inhabited the mountains of central Borneo. Another note at the northeast tip of Borneo states that the location and number of islands in the area is uncertain. Sheet two of two.

This map features a label noting that the Byayos people inhabited the mountains of central Borneo. Another note at the northeast tip of Borneo states that the location and number of islands in the area is uncertain. Sheet two of two.

This map features a label noting that the Byayos people inhabited the mountains of central Borneo. Another note at the northeast tip of Borneo states that the location and number of islands in the area is uncertain. Sheet two of two.

This mid-18th century map features a label noting that the Byayos people inhabited the mountains of central Borneo. Another note at the northeast tip of Borneo states that the location and number of islands in the area is uncertain.

This map features eight expedition routes across the South China Sea from 1752 to 1763. The web of lines is a rhumbline network, and bathymetry (sea depth) is marked. The place names are in French, but with an English title and notes.

Map of the Indian Ocean dominated by a rhumbline network—a web of interconnected lines used to help plot routes—with a compass rose at the centre. At the top there are (incomplete) drawings of people with text in Dutch, French, English and Spanish.