Ordnance Survey - 20th Century
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1. Boundary Commission Lo Wu New Territories Hong Kong 1922 |  |
2. Ordnance Surveyors Off To Boer War - Nash |  |
3. OS Revision Section Ramsgate 1907 - OS |  |
4. S Africa War medal presentation at OS Sept 1901 - OS |
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5. Surveyors at Stoke on Trent 1911 - OS |  |
6 OS Civil and Military Officers 1927 - Album |  |
7 OS Trig and Levelling Division 1932 - Album |  |
8. Ordnance Survey Group Date Unknown |
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Senior Staff O.S. September 1969 | ||||||