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Bibliographies
Up one levelA folder to hold all bibliographic material.
Surveying & Mapping in the American Expeditionary Force 1917-1918
Some of these individual references are to letters etc possibly all in one file in U.S. National Archives. Most of the items in this list are to do with Flash and Sound Ranging.
GSGS Miscellaneous Maps - Office Reference (OR) Maps
The most familiar manifestation of the OR map is of course the modern map catalogue index map but this is a specialist use of the OR designation. OR maps existed in their own right prior to the adoption of the OR designation for indexes. The OR designation was generally applied to small-format simple outline sketch maps, often monochrome used for a multitude of purposes. They are not without interest however. One use that comes to mind was that of the 3 or four Office Reference maps used to illustrate the stages of the retreat from the Thai border down through the Malay peninsula and onto the island of Singapore in 1942 that were produced presumably for high level briefing purposes.
Published material
This bibliographic folder serves as a first point of reference for those interested in consulting historical material associated with Defence Surveying.