In the first half of the eighteenth century deficiencies in the existing mapping of the English counties became apparent, but as the century progressed new scientific principles were applied to map making. By 1800 Cambridgeshire and Rutland were the only counties lacking a modern large-scale map. The costs of surveying, drafting, engraving and publishing a large-scale county map were considerable, and such a project, like all those we have seen so far, had to be privately funded. A common means of financing was by subscription, and this was the method adopted by Richard Baker to fund his new map of Cambridgeshire.

Surveying started in 1816 and the map, at the scale of one inch to one mile, was published in 1821.