Purchase via Amazon : Search The Great Masters - Einar Schmit-Jensen https://amzn.to/3D0H7WQ
 
Written by one of the great classical Masters of the 20th Century, Einar Schmit-Jensen, a pupil of Decarpentry, Beudant and Herold, and one of the finest equestrian scholars and masters of his time, this collection of biographies (augmented by his last pupil Caroline Stephens) serves to whet the appetite of those who want to delve deeper into Classical Equestrian Art by understanding who some of the main figures of yesteryear were, all of them exceptional horsemen, some prolific authors in their own right. The first in what I hope is a series to put faces to abstract names, and to help scholars go a little deeper in their understanding of the great horsemen that were masters of their art.
 
Available from https://amzn.to/3D0H7WQ