History of Surveying

Only one of these 4 presidents was not a land surveyor.  Can you guess which one?
(Clue:  land surveying was a vital skill in the earliest years of the United States)

==============================================================================================================

When new lands are being explored, land surveyors are among the first on the ground.

In America’s formative years men such as George Washington were surveyors  before they became better known for their political and intellectual skills. Accurate measurements of land was crucial to the formation of a stable and growing country whose wealth derived from the land.