Cave concessions for edible birds nests, guano, and natural history records.
23 volumes across 7 series.
| Reference | Series | Volume Title | TNA |
|---|---|---|---|
| CO 1030/1283 | CO 1030 | Colonial Development and Welfare (CD&W) allocation to Borneo territories: Geological Survey Department | ↗ |
| CO 1030/1284 | CO 1030 | Geological co-operation between Indonesia and Sarawak | ↗ |
| CO 1047/524 | CO 1047 | Labuan and Borneo. ‘Map of Sarawak, Compiled by Charles Hose, D. Sc., F. R. G. S., F. R. C. I., from his own compass traverses combined with all other available cartographic material’. 4 sheets mounted as 2. Printed, cloth. 8 miles to an inch. Inset: ‘Geological Sketch Map of Borneo after Posewitz’, 72 miles to an inch | ↗ |
| CO 1047/531 | CO 1047 | Labuan and Borneo. ‘Dr. R. R. Prez’s Map of British Nordborneo’, Geological Sketch Map. Printed. 1:2,707,790. Accompanied by Remarks Stressing the Approximate Mapping | ↗ |
| CO 1069/535 | CO 1069 | SABAH 21. Photographs taken by Mr. Hugo of the Bajau and Murut tribes, birds nest hunters, jungle life and lumbering, 1921 | ↗ |
| CO 531/26/7 | CO 531 | Report on Wildlife Preservation in Borneo and Sarawak | ↗ |
| CO 717/104/13 | CO 717 | Preservation of wildlife | ↗ |
| CO 717/109/9 | CO 717 | Preservation of wildlife | ↗ |
| CO 717/116/6 | CO 717 | Preservation of wildlife | ↗ |
| CO 717/116/7 | CO 717 | Preservation of wildlife | ↗ |
| CO 717/116/8 | CO 717 | Preservation of wildlife: report by Sir Thomas Comyn Platt | ↗ |
| CO 717/121/14 | CO 717 | Salary of director of geological survey | ↗ |
| CO 717/123/4 | CO 717 | Preservation of wildlife | ↗ |
| CO 717/133/6 | CO 717 | Geological Survey Department: vacancies | ↗ |
| CO 717/196/1 | CO 717 | Colonial Development and Welfare. Geological survey | ↗ |
| CO 717/196/2 | CO 717 | Colonial Development and Welfare. Geological survey | ↗ |
| CO 717/96/1 | CO 717 | Preservation of wildlife | ↗ |
| CO 874/153 | CO 874 | Reports. Correspondence and Results of Geological Investigation by Dr. R. R. Piltz | ↗ |
| CO 874/767 | CO 874 | Correspondence. Report on Birds Nests Caves | ↗ |
| CO 874/768 | CO 874 | Correspondence. Birds Nests & Guano Concessions | ↗ |
| CO 874/769 | CO 874 | Correspondence. Birds Nests & Guano Concessions | ↗ |
| CO 874/890 | CO 874 | Correspondence. Geological Research & Exploitation of Minerals | ↗ |
| CO 954/6/10 | CO 954 | Combined Geological Survey | ↗ |