I stumbled upon a few interesting books that you may find as interesting as I have. These books will be particularly interesting to geodetic surveyors and those surveyors across the planet who annually participate in Survey Earth in a Day. Flat- Earthers may find them to challenge their theories.
A history of the determination of the figure of the earth from arc measurements
Publication date 1906
Topics Geodesy, Arc measures
Book from the collections of University of California
The figure of the earth : Roberts, Frank Calvin : Free Download & Streaming : Internet Archive
Sec. I. Historical -- sec. II. The oblate spheroidal hypothesis
Another great book worth checking out.
An introduction to geodetic surveying. In three parts: I. The figure of the earth. II. The principles of least squares. III. The field work of triangulation
Publication date 1892
Topics Geodesy
Book from the collections of University of California
And yet another great book worth checking out.
The figure of the earth
Publication date 1885
Topics Earth -- Figure
Sec. I. Historical -- sec. II. The oblate spheroidal hypothesis
Thoughts