Online library catalogues are relatively recent facilities and many libraries have not yet managed to create online catalogue records for all of their collections. This is true for Cambridge University Library Map Department as well as for many other map (and other) collections worldwide.
So, although many online catalogues include descriptions of maps and atlases they may not describe the whole of a collection. The bulk of the Cambridge University Library map collection, for example, is only described in its card catalogue. In addition, most libraries do not catalogue separately each map in an atlas, or each map in a map series.
If you can't find what you are looking for in an online catalogue, contact the Library directly.
Since 2000 Cambridge University Library Map Department has catalogued all new acquisitions (including current and older material) only in the Library's online catalogue, iDiscover.
Catalogue entries for Map Department items catalogued before this time will only be found in our card catalogue, located in the Map Department.
The Map Department has also listed some parts of its collection in ArchiveSearch the University's archive catalogue (replaced Janus in early 2021). Most of the items listed will only be found via Janus and cannot be identified via iDiscover or the card catalogue.
... so you may need to look in all three places.
If you can't find something please ask us since there are some items which are never catalogued
More information about the Map Department catalogues.
Quick guide to searching:
Cambridge University Library Map Department's card catalogue is consulted in the Map Room, the Map Department's reading room.
The cards are arranged in one alphabetical sequence arranged by the area covered by the map, and then by map type (general, topographic, administrative, geology, railways, etc., etc.) and date.
This means that it is not possible to go to one place in the card catalogue and see all the maps of, for example, England and all its parts. The trick is to first search under the most specific place you are interested in - a village, say - and then work up the geographical/administrative hierarchy - parish, county, country, continent ...
More detailed information on the card catalogue is available on the Map Department's web site.
Searching other online catalogues can provide an idea of what might be available at CUL (remembering that much of CUL's collection - in common with many libraries worldwide - is not catalogued online), and point you to other places where maps might be consulted or from whom scans might be requested.
The most useful online catalogues are:
WorldCat - a catalogue that searches the collections of major international libraries,
The Map Department cannot collect everything that is published. But sometimes we don't have current mapping because it is not available. To find out what might be available have a look at the Buying Maps page of this LibGuide