This series contains maps, plans and architectural drawings, extracted from various records created or accumulated by the Treasury (T). Many are complete pieces moved to map storage in the mid-twentieth century from two series consisting wholly of maps and plans: T 62 and T 63. There is no common subject matter.
As far as possible, places depicted on maps or drawings are identified in catalogue descriptions by the names given on, or contemporary with, the documents themselves, although spellings have been modernised and standardised to facilitate searching.
Places now in the London area, but outside the City of London, are identified according to the county or borough in which they were situated at the date when the map or plan was produced. 'London' or 'London:' followed by a borough name, is used in describing material produced during the period of the London County Council (1899-1965) or the Greater London Council and successor authorities (1965 to date). Where appropriate to facilitate searching, the current inner London borough is also noted in brackets.