A map by a Dutchman - The name Assam was
known to the Dutch already in 1661
- Kingdom of Bengale (Kingdom of Bengal) which was published around 1662. The map was drawn by a Dutchman, John van Leenen, who was in “Bengale” in 1661. The document is presently in the Maritime Museum, Rotterdam.
- Letter of Joan Maetsuyker, Governor General of Dutch Batavia to Mirzumala on 29-08-1663 where he addresed Mirzumala as grooten Mogol in Assam, Bengale etc. from the book Vervarelijke Schipbreuk van't Oostindische Jacht Terschelling, published by De Haan Nv, Utrecht in January 1944.
- Diary of a Dutchman - Vervarelijke Schipbreuk van't Oostindische Jacht Terschelling, published by De Haan Nv, Utrecht in January 1944.