Subject
- Land178
- Valleys[remove]178
- Mountains76
- Bodies Of Water42
- Rivers39
- Panoramic Photographs35
- Settlements22
- Villages22
- Architectural Types19
- Architecture19
- Surveys and Surveying18
- Ravines14
- Glaciers12
- Military Campaigns and Battles11
- Religious Buildings10
- Ordnance Survey of Sinai, 1868-699
- Transportation6
- Afghan Boundary Commission., 1884-865
- Churches5
- Younghusband Mission, Tibet (1903-1904)5