Published References To
The Order of Saint Joachim was described in A.M. Perrot's book Historische Sammlung aller Ritterorden der verschiendenen Nationen (A Historical Collection of all Knight Orders of Different Nations) published in Leipzig in 1821. Perrot' s book was an ambitious project to catalogue all the existing Knightly orders of Europe and illustrate their various insignia and regalia.
Perrot not only provided colour drawings of The Order's insignia at the time, he also wrote a brief history of the foundation of The Equestrian, Secular and Chapterial Order of Saint Joachim, the qualifications for membership in The Order, as well as its charitable aims as they existed in 1821.
Below is an actual copy of Perrot's 1821 text (pp. 122-3) in German describing The Order of Saint Joachim (Orden des heiliges Joachim), followed by a modern translation:
See also Sir Levett Hanson's An Accurate Account of all the Orders of Knighthood at present existing in Europe (1803)