Lon R. Shelby

R.) Shelby (August 2, 1935 - April 8, 2018)[1] was an American academic, and Professor Emeritus of Speech Communication and former Dean of the College of Liberal Arts at the Southern Illinois University.

Shelby, Shelby attended Irving High School, and obtained his BA in History,[6] his MA from Vanderbilt University, and his PhD from the University of North Carolina at Chapel Hill in 1962 with the thesis, entitled "The technical supervision of masonry construction in medieval England."

After reconsidering the normal kind of education in those days with the trivium and quadrivium, Shelby suggested, that it appears, that medieval master masons didn't receive their geometrical knowledge from formal schooling but from oral tradition.

Also medieval scholars had an interest in practical geometry, and shared their thoughts on this topic in numerous treatises.

[10] After comparison geometrical works and classical geometry of Euclid and Archimedes Shelby finds hardly any resemblance.