Roman Britain (Historical Map and Guide): 7

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Roman roads remained in use as trunk roads for centuries after the Romans withdrew from Britain in 410 AD. Systematic construction of paved highways did not resume in England until the 18th century. 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 folders In difficult cases DOS would study the evolution of the boundary over many decades, then write a critique explaining how the boundary alignment was transferred from official documents to the DOS map. One example would be the former Yemen Arab Republic-People’s Democratic Republic of Yemen boundary. Directorate of Overseas Surveys map production example set

This available online and provides an excellent overview as the OS Map has considerable detail on it. It is in our plans to provide a set of mapping data that can be used by us all using Google Maps nd Google Earth so we will keep you posted on that but for the moment here are the top 3 sources we have identified: Into the fossa was dumped large amounts of rubble, gravel and stone, whatever fill was available. Sometimes a layer of sand was put down, if it could be found. When it came to within 1 yd (1 m) or so of the surface it was covered with gravel and tamped down, a process called pavire, or pavimentare. The flat surface was then the pavimentum. It could be used as the road, or additional layers could be constructed. A statumen or "foundation" of flat stones set in cement might support the additional layers. Although most of the maps are topographic, there are significant holdings of geological and land use mapping. Other thematic maps include climate, soils, and population. 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: The example map sheets are held with full supporting records. Directorate of Overseas Surveys staff listsThe 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

Between 1946 and the late 1980s, Directorate of Overseas Surveys (DOS) field parties worked towards establishing ground control (planimetric and height) for mapping, observing national primary and secondary survey frameworks, and assisting with tertiary and cadastral control and levelling. The collection includes results of control surveys by other organisations, some connected to DOS schemes and most used by DOS in its mapping programmes. We also have an extensive wiki aimed at the collection of historical information surrounding the road network and its history. Individual trig stations and occasional bench marks are plotted, with heights, on DOS 1:125 000 and larger-scale mapping. International boundary survey dataThis collection is predominately held by the Royal Geographic Society with the Institute of British Geographers (RGS-IBG), with additional records held by The National Archives. Royal Geographic Society with the Institute of British Geographers 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. 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. listed chronologically)• ca. 1852? - Diagram shewing the principal triangulation for the Ordnance Survey of Great Britain and Ireland. 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