This map shows the county of Hertfordshire with its hundreds in about the mid 1800s.

The map below shows the parishes in the same period, coloured according to hundred. (Click the image for the full-sized version).

A repository of everyday geekery
This map shows the county of Hertfordshire with its hundreds in about the mid 1800s.
The map below shows the parishes in the same period, coloured according to hundred. (Click the image for the full-sized version).