@raharris1973 @Pkmatrix @Enigmajones @Jared
I have the exact borders; the original map is in the National Archives, and it is reproduced in the book
The United States Consul and the Yankee Raja by H.G. Keith, via the Brunei Museum, which is pretty much the largest remaining source on the colonization of the region.
Ellena, the capital, was held on the river Kimanis, and lasted only about 9 months in total. The Rajah, Joseph William Torrey, eventually left and returned to Hong Kong, and never had his title stripped from him, and he used the title of Rajah of Ambong & Maroodoo until his dying day. Charles Lee Moses, the US Consul, died a few years later while at sea (the boat sunk) after a various torpid series of events (including burning down his own Consulate in order to try and start an incident between himself and the Sultan of Brunei).
Moses was very disagreeable and pigheaded, and he butted heads against Torrey, against the Sultan, etc.
Here is the map on M-BAM scale (the original was shrunk a ton to fit in the book, and I don't want to risk damaging the book on a scanner): areas in yellow are leased directly by Sultan Abdul Mumin of Brunei. The mainland territories were on a $4000 lease, while the island of Banguey was on a separate lease for $1000. Pengiran Temanggong of Sulu leased the territories in pink, including the islands of Balabac & Palawan for the sum of $4000. All leases are yearly.
Note that in the Jawi version of the lease, there is no indication of Palawan being leased.
I had to revise the map myself, as I realized I had made an error previously, so that fixes most everything.
Note that the only settlement took place on the Kimanis river (and was abandoned in less than a year), while the titular Ambong & Maroodoo never received more than a cursory glance.