Find by Place - Help
Watch a Help video on the Find by Place viewer.
Main search process
Choose the map category that you would like to search from the left-hand list. These are ordered roughly by date and from more detailed to less detailed maps. Zoom in on your area of interest and click on the map to view the sheet that covers this area. The sheet that you have selected is highlighted in blue, and a brief record and image of it appears in the right-hand panel. Select this to view a zoomable image or further information about the map sheet. As you zoom or pan the main map, the series lists in the left-hand panel update to show just those that cover the current map view.
You can search all the maps in the viewer, all Ordnance Survey maps, or all non-Ordnance Survey maps by selecting the 1. Select a category: 'Multiple categories / group search' option. Click on the map to return all maps covering this point ordered roughly by date and scale. Bounding boxes of maps are only shown of the results.
All of our online maps are included in this application:
|Belgium / France|
|British First World War trench maps of Belgium/France||1915-1918||307 sheets|
Multiple categories / Group search
It is possible to search for everything we have online covering a location, as well as groups of maps. To do this, under the 1.Select a category drop-down list, scroll down to choose 'Multiple categories / group search'. Bounding boxes are only shown of the results. Click on the map to return all maps covering this point - they are ordered roughly by date and scale. It is also possible to search for all Ordnance Survey maps, all non-Ordnance Survey maps and all coastal charts by selecting these options in the 2. Select a map / map series: drop-down list.
Gazetteer, National Grid Reference, and Counties/Parishes for searching
The Gazetteer at the top of the map allows you to locate your area on the map using modern place names from Nominatim, as well as by British National Grid Reference - 2,4,6,or 10 figures. Further left, drop-down boxes allow counties and parishes (based on their names and boundaries in the 1940s) to be searched. In all cases, the map will then position to the place, National Grid Reference, county or parish that has been selected. We gratefully acknowledge the Vision of Britain project for allowing us to use these county and parish boundaries.
By default, the background map shows a modern Bing road layer. Select the drop-down list to choose Bing satellite or hybrid layers, MapBox streets or satellite layers, 1920s mapping from the NLS Historic Maps API, OpenStreetMap, or Ordnance Survey Opendata as background maps. Double-click on the map or slide the zoom slider (upper left) to zoom in on the map. Hold the ALT and SHIFT keys down and drag with the mouse to rotate the view.
In the lower-right of the map, the location of your mouse position is shown as a British National Grid Reference, as British National Grid Eastings and Northings, and as longitude and latitude.
Linking to the viewer
The URL in your web browser address bar changes dynamically as you zoom and pan the map, and when you alter visible map layers and overlays. You may copy or bookmark the URL in your web browser address bar to save the current viewer location and zoom level.
We have released the code behind this viewer on Github for onward use. We hope that other libraries, archives and institutions may benefit from the code in making available their geographical collections.
Please email firstname.lastname@example.org for further assistance, or to provide general comments/feedback.