Cuijper was a small island in the Bay of Batavia. It harboured several large warehouses for the storage of goods. The VOC staff that worked here during the day travelled to the nearby island of Onrust to spend the night. At night Cuijper was guarded by just two men.
- Dam, Pieter van, Beschryvinge van de Oostindische Compagnie (uitgegeven door Dr. F.W. Stapel) ((Den Haag), 1701 (1927))