Browse Fred Sturm's A Clear and Practical Introduction to Temperament History one part at a time. Each link opens the cleaned markdown for that part in the Markdown Viewer.
A series of nine articles by Fred Sturm under the title of "A Clear and Practical Introduction to Temperament History," published in the Piano Technicians Journal in 2010-2011. They cover a period of roughly 1500 - 1850, and are based mostly on practical tuning instructions of that time, from Italy, France, Germany and England.