Harold O’Connor is a jeweler’s jeweler. He has been a teacher and practicing goldsmith for over 50 years. He was educated at schools in Denmark, Finland, Germany, Austria, Mexico, and the U.S. He has conducted workshops in over 300 schools over North America and in 23 countries abroad, including South Korea, New Zealand, Peru, and Estonia. His work is in many private and public collections including The Metropolitan Museum of Art in New York City, Smithsonian Institution in Washington D.C., Victoria and Albert Museum in London, Boston Museum of Fine Art, and The Racine Art Museum in Wisconsin. He is the author of "The Jeweler’s Bench Reference" and "The Flexible Shaft Machine".