These will be offered to readers in the first instance in order to preserve the originals. Many contain scholarly introductions. Street plans of British cities and towns. This is a unique reference tool developed by staff consisting of 13 wide ring binders containing information on the collections and the history of cartography. There is a General and an Ordnance Survey section.
Most first editions are on microfiche.
The remainder are on microfilm. Ordnance Surveyors' Drawings. King George III Topographical Collection. The Map Library has a good collection of finding aids and guides to the collections which are available free of charge. The subjects covered include 'Large-scale Ordnance Survey plans of Great Britain and Ireland', 'How to find estate maps', 'Cartographic sources for dating houses', 'How to find atlas maps and manuscript maps in the British Library and Great Britain'.