Iowa | smithsonianmag.comhttps://www.smithsonianmag.com/rss/tag/iowa/RSS feed for IowaenThu, 25 Jun 2026 13:00:00 +0000How One German Button Maker Searched the Rivers of the American Midwest for the Shells That Could Make Him a Fortunehttps://www.smithsonianmag.com/smithsonian-institution/how-one-german-button-maker-searched-the-rivers-of-the-american-midwest-for-the-shells-that-could-make-him-a-fortune-180989012/John Boepple settled in Muscatine, Iowa, where he produced pearl buttons made from freshwater mussel shells. His innovations brought economic prosperity to the town—and disaster to the local mussel populationsThu, 25 Jun 2026 13:00:00 +0000https://www.smithsonianmag.com/smithsonian-institution/how-one-german-button-maker-searched-the-rivers-of-the-american-midwest-for-the-shells-that-could-make-him-a-fortune-180989012/