Anleitung zur Grubenmauerung: [Grundw.]
An 1831 German mining manual by Moritz Ferdinand Gätzschmann, published by Schumann, on lining mine shafts with masonry, held by the Eisenbibliothek Schlatt for mining engineers and builders. The single picture is a red seal impression, an oval wax-like medallion with a standing robed figure and lettering around its rim, which a designer might use for its bold red-and-dark tonal contrast and its ornamental lettered border.
![Picture 1 of 1 from Anleitung zur Grubenmauerung: [Grundw.] (1831), leaf 2](https://img.insideoutlibrary.com/img/200/erara-19604345-2-1.webp)