||Paris: Ch. Gambogi et Cie., n.d.. Plate G.G. 2050.
||Original images: 150dpi grayscale tif (from pdf) files approx. 1570 by 2080 pixels. Editing: re-sampled to 600dpi, converted to black and white tif files, de-skewed, and set uniform margins.
Publication in Germany by Schott noted in Hofmeister's Monatsbericht (1869), p.69.