This two volume set might be of interest to list members, published by the Royal Navy's Naval Intelligence Division during WWII
Netherlands East Indies vol.1
Netherlands East Indies vol.2
https://ia600101.us.archive.org/16/item ... /18551.pdf
Both books have colored maps of the islands in the back
A much earlier version
A manual of Netherlands India (Dutch East Indies)
by Great Britain. Naval Intelligence Division
Publication date 1920
A Happy New Year to all list members!
These are rather similar to the publications the department of colonies created for its prospective workers going abroad.
Also, much of this seems similar to publications "The Earth and its Peoples" of the day
still good material as it sets the date and perspective from the European end