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Contact

Corrections, questions about method, and requests for a place or measure to be added are all welcome.

Email [email protected].

What is most useful in a correction

• The page it appears on, and the two years selected.
• The figure as shown, and what it is believed to be.
• The source that says so, if there is one.

Method is described in sources and method, and the matching of places across boundary changes in how places are matched. Many apparent errors turn out to be one of the limits described there.