Caert-Thresoor was a compact, pocket-sized atlas combining maps and illustrations with short descriptive texts. It first appeared in 1598 under the imprint of Barent Langenes in Middelburg, with copies available for sale through the Amsterdam publisher Cornelis Claesz. Conceived as an affordable and portable alternative to large-format atlases, it brought together terrestrial, maritime, and cosmographical material in a form intended for both learned readers and a broader public.

The maps and illustrations were engraved chiefly by Pieter van den Keere (#285, #383), with substantial contributions by Jodocus Hondius (#294, #295, #296). The authorship of some plates such sa this one remains uncertain and may involve either engraver.

Titled India Oriens, the map depicts Southeast Asia, extending from India and the Bay of Bengal eastwards across the Malay Peninsula and the Indonesian archipelago to New Guinea, with southern China visible at the northern edge. It reflects the rapid expansion of Dutch geographical knowledge in the 1590s, incorporating Portuguese navigational information transmitted through the writings of Jan Huygen van Linschoten and reinforced by early Dutch voyages to the East Indies.

The map is numbered “17” in the upper right corner, indicating its sequence within the atlas, and marked “Cc 5” in the lower right, the printer’s signature denoting the fifth leaf of section Cc.

Peter van der Krogt, ed., Koeman’s Atlantes Neerlandici, vol. 3 (’t Goy-Houten: HES & De Graaf, 1997–), 376-381 (no. 341:01).

Günter Schilder, Monumenta cartographica Neerlandica, vol. 7 (Canaletto, 2003), 457

David Parry, The Cartography of the East Indian Islands: Insulae Indiae Orientalis (London: Countrywide Editions, 2005), 103, pl. 4.17.