"Steinbrück, Johann Julius (Germ). Medallist and Mint-engraver-assistant at Königsberg, 1752-1768. His initials occur on the currency as St. or S.", Forrer, L. "Biographical Dictionary of Medaillists", Bd. 5 (London 1912), S. 672
en
"Steinbrück, Johann Julius (Germ). Medallist and Mint-engraver-assistant at Königsberg, 1752-1768. His initials occur on the currency as St. or S.", Forrer, L. "Biographical Dictionary of Medaillists", Bd. 5 (London 1912), S. 672
(The left column lists the relations of this actor to objects in the right column. In the middle you find other actors in relation to the same objects.)
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