We also have an extensive wiki aimed at the collection of historical information surrounding the road network and its history. During 2003 and 2004, Ordnance Survey and TNA sought suitable custodians of all parts of the collection and relocated them. The public could access the historical archives again from the end of 2004. Where are the International Collection archives now? The International Collection was the result of the work of the Directorate of Colonial Surveys, the Directorate of Overseas Surveys, Ordnance Survey (Overseas Surveys Directorate) and Ordnance Survey International. The history of the International Collection They're filed under code AD rather than by individual country. Directorate of Overseas Surveys survey data catalogue The Directorate of Overseas Surveys (DOS) book collection was merged with the Ordnance Survey Library’s collection in 1987. It has since been withdrawn from the library and has relocated to other institutions under the direction of the National Archives.

RAF photography at varying scales is held, along with Royal Navy photography. Additional records exist for more than one set of cover at various dates and is available for environmental research, geomorphology, vegetation, communications, and settlement, across a 40–50-year time span. The MCCs, organised by 1:100 000 scale map sheet numbers (½˚ squares – technically not ‘square,’ but normally referred to as such), give current and superseded coordinates for every point that is plotted on the MCDs. This includes heights (ground level and station mark) and references to the files that contain its coordinates, station descriptions and photo identifications. Primary triangulation and traverse areas A basic scale used on former British territories was 1:50 000. Smaller scales were used in arid lands such as British Somaliland (1:125 000) and parts of Botswana (1:125 000, later 1:100 000). Larger scales (1:25 000) in Mediterranean and Caribbean islands. "Selected" areas, and sometimes whole islands (Malta, Gozo, Bermuda), were mapped at 1:2500 scale (occasionally 1:5000, 1:2400, 1:1200) and, rarely, at 1:500 scale (Male, Stanley). Ordnance Survey already had its own international division. When the two organisations were merged in 1984, all international aerial photographs, maps, and survey data were amalgamated into one working collection. It was named Technical Information and Support Services and kept that title for seven years, before being renamed International Library in 1991. Most of the known network was complete by 180 AD. Its main purpose was to allow the rapid movement of troops and military supplies. It was also vital for trade and the transport of goods.

The DOS maps from the collection have been re-located to RGS-IBG, which now holds a complete set designated as The Ordnance Survey International Collection (OSIC) Map Archive. The National Archives A guide to main areas of primary triangulation and traverse, and secondary and minor control established by Directorate of Overseas Surveys (DOS), is provided in the DOS Annual Reports from 1959 to 1984.

International boundary survey data, maps, correspondence, and files are held by The National Archives. It was Directorate of Overseas Surveys (DOS) practice to show international boundaries on the medium-scale mapping wherever well-defined, and there was enough information to be drawn without significant error. Portrayal of boundaries was agreed with countries concerned, and correspondence with national survey departments provided additional data. The many existing remains of víae publicae. These are often sufficiently well preserved to show that the rules were, as far as local material allowed, closely followed in practice. By 1991 the last significant, aid-funded mapping projects had been completed by OSD and all survey parties had been disbanded. OSD’s title was changed to OS International and its priorities turned to consultancy, mainly in Eastern Europe, while traditional map production gradually declined. The RGS-IBG collection contains all series produced by the Directorate of Colonial Services (DCS) and its subsequent successors between 1946 and 1999. This includes:

Adventure

You can see this functionality in action if you choose one of the One Inch layers from the 1950s-70s.

The example map sheets are held with full supporting records. Directorate of Overseas Surveys staff lists There are two sets of air photographs. One is held at the National Collection of Aerial Photography (NCAP) in Scotland, and the second has been entrusted to Oxford University to support global climate change research. Non-Directorate of Overseas Surveys (DOS) series were mainly produced by national survey departments and held in the original OS International Library. They don't form part of the Ordnance Survey International Collection (OSIC) map archive at the Royal Geographic Society with the Institute of British Geographers (RGS-IBG). The series has been offered to academic institutions throughout the British Isles. Directorate of Overseas Surveys progress foldersThree films showing DOS activities were transferred to the B ritish Film Institute's National Film and TV Archive. DVD copies of one of these films, a DOS training film, was supplied to all main repositories holding parts of the Ordnance Survey International Collection. Non-Directorate of Overseas Surveys mapping During the 1970s, government reviewed the DOS’ purpose. Then, in 1984, the organisation was merged with Ordnance Survey and given a new title: Overseas Surveys Directorate, OS (OSD). Four maps have been permanently preserved at The National Archives as typical examples of Directorate of Overseas Surveys (DOS) map production between 1946 and 1999: The Roman roads in Britain were, with Roman aqueducts, and the Roman army, [1] one of the most impressive features of the Roman Empire in Britain. The final steps used concrete, which the Romans had rediscovered (it had been used in Ancient Egypt). They seem to have mixed the mortar and the stones in the fossa. First a small layer of coarse concrete, the rudus, then a little layer of fine concrete, the nucleus, went onto the pavement or statumen. Into or onto the nucleus went a course of polygonal or square paving stones, called the summa crusta. The crusta was crowned for drainage.