see also #1228 for M&K images
Final decision example: Fig. 4. Lampworkers, Johann Kunckel, Artis Vitrariae Experimentalis (Frankfurt, 1679), plate X. A group of lampworkers sit around a table underneath a vent and use small flames bolstered by foot-powered bellows to heat glass rods and tubes. This is the earliest visual representation of the lampworking process. It is likely close to the activities that the author-practitioner may have witnessed. © HAB Wolfenbüttel. Permalink: http://diglib.hab.de/drucke/od-215/start.htm?image=00487 (CC BY-SA 3.0 DE).
implemented