Side by Side - Help

This application allows you to compare selected georeferenced maps to each other and to modern map or satellite layers in a split-screen viewer.

  1. Choose an historic map that you would like to view, by selecting it from the drop-down lists above each map.
    Use both 1. Select a category: and 2. Select a map / map series:.
  2. Zoom in on your area of interest to view the overlay in detail.


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