This is an 'artificial' series, as maps have been removed from other POST classes and added to POST 21 in order to group them together by format; in addition, maps from numerous different depositors, both internal and external have been mixed together so that it is difficult to find any strands of original order. It has been possible to impose a loose order on the maps by grouping them together by subject as follows:
circulation maps, county maps, town maps, district maps, postcode maps and overseas mail maps.
The majority of the series consists of maps that were commissioned by the Post Office or maps that have been adapted for use in the daily routine of various post office departments.
It includes Ordnance Survey maps which have been annotated to indicate changes to postal boundaries as well as printed town maps, post office directory maps, road maps and hand drawn sketch maps. The maps have been produced using a variety of different methods including lithography, engraving and printing; many of the maps have ornamental cartouches and many are coloured.
Several of the maps in the collection are black and white copies of originals which have not been retained. Unfortunately it is not possible to discern the significance of lines which were colour coded on the original map.
Many of the maps centre on London and there is a sub-series of maps relating to the different postal districts in London, including maps depicting the official postal districts after they were put in place during the period 1857-1858 (see particularly POST 21/772: a reproduction of a map of the London postal districts produced by Richard Weller in 1858, which gives information on the division process). There is also a set of maps from 1948 showing the routes taken by postmen on their daily rounds in the west end of London, which include buildings damaged by bombs during World War Two.
Other maps include postcode maps for areas in Sheffield, Lincoln, Manchester and London; several nineteenth century District Surveyors' maps, some of which show 'armed and unarmed rides' in the various districts and include letters to Francis Freeling and several maps from 'Atlas Universel' (1757) produced by the Vaugondy family [Father and son], depicting various European postal routes and including ornamental cartouches engraved by the Haussard sisters.
