Secret Symbols of the Rosicrucians

From the editor's preface:
This issue follows a translation originally issued by the American “Rosicrucian” society AMORC in the 1930s, and subsequently reprinted (uncredited in my copy but stated elsewhere to be by one George Engelke). All the full copies of this work I have
access to reproduce the plates in black and white; colours in the following are in some instances conjectural restorations, in some instances based on low-resolution images found on the Web, and in a few cases based on the description of the Geheime Figuren in A. E. Waite’s Brotherhood of the Rosy Cross. A comparison of the contents of the AMORC edition with Waite’s account tends to support the editorial claim that it contains all the material from the 1785-1788 publication (I have seen a few references to an undated third part of the original work which has not been translated).