Lewis Feuchtwanger was a German doctor and metallurgist who immigrated to New York City in 1829, where he opened a pharmacy and practiced medicine. He became well known for his collection of minerals and for attempting to introduce nickel silver into U.S. coinage, drawing attention to the combustibility of saltpeter. He was a member of scientific societies in the United States and abroad.
This chart displaying the colors of gems and minerals is from A Popular Treatise on Gems and Minerals by Lewis Feuchtwanger, a German Jewish immigrant to the United States, a doctor who was also well…
This rabbinic ordination certificate granted to Judah ben Eliezer Briel was printed as a broadside in Venice and signed by prominent Venetian rabbis. It certifies his learning and his fitness to…
Paper cuts have been a tradition of Jewish folk art, with the earliest record of one dating to the fourteenth century. Given the widespread availability of paper in Europe by the mid-nineteenth…