||Leipzig: C.G. Röder.
||St. Petersburg: A. Büttner, n.d.. Plate 2950.|
Co-issue: Hamburg: D. Rahter, n.d..
||Original images: 300dpi, color jpg files approx. 3000 by 3760 pixels. Editing: re-sampled to 600dpi, converted to black and white tif files, de-skewed, and set uniform margins.