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Resources that may help you date an undated map

Bartholomew (pdf). See also the Old Maps of Essex website.

Clason Road Maps. 1923-1931.

Date Codes for Maps. From the Western Association of Map Libraries website. Mainly American publishers but includes Geographia and Geographers A-Z maps. 

Dating a Map. From Map Curators' Toolbox on the British Cartographic Society's website. Including Geographia Limited and Bartholomew maps. 


How Old is Your Globe? From Replogle Globes. A list of name-changes for countries with dates.

Johnson U.S. Map Project. Dataset of the changes in Johnson's U.S. and state maps which will allows the user to definitively date the publication of any loose map from these atlases.

List of world map changes. A Wikipedia page so also use other sources! 

Michelin Maps. This site also has sections on covers and advertisements.  

Old Maps of Essex. Lots of useful information.

Petrol Maps. The history of oil company road maps in Europe. Includes section on dating oil company road maps.

Rand McNally and Gousha maps. On the website of the Road Map Collectors Association. More detailed information is available to members only.

Varner Guides American Roads. List of American named auto trails with date of establishment (for some).

World Maps. Flow-Chart to determine age of undated world maps. Useful and fun! As a Word file

Opening Times

Map Room Opening Times

Monday to Thursday 9am to 12:45pm and 2pm to 5:10pm
Friday 9am to 12:45pm and 2pm to 4:50pm 

i.e., we are closed lunch time, in the evenings and on Saturdays. However, given sufficient notice, we may be able to transfer Map Department items to the Rare Books Reading Room for consultation during these closed periods. 

Remember: Pencils only in the Map Room and No food or drink!

Where to Find Us

Library Floorplan

The Map Room - the Map Department's Reading Room - is on the first floor of the Library at the far end of the North Gallery. At the top of the stairs from the Library's Entrance Hall, turn right and the Map Room is at the end of the corridor. 

We are very close to the Tea Room.

Contact us

Map Department 
Cambridge University Library 
West Road 
CB3 9DR 


+44 (0) 1223 333041
+44 (0) 1223 333042
Our LibGuide may help with some enquiries