Thanks to the limestone bluffs and hills that surrounded Red Wing, the town became a Minnesota lime-making and stone quarrying center from 1870 to 1910. Those forty years are sometimes known as the city’s “Stone Age.”

Flowing out of Detroit Lake to the southwest, short segments of the Pelican River connect a string of five large lakes and two small ones. From 1889 to 1918, steamboats, launches, and a system of locks and channels connected this chain of lakes, which stretches twelve miles southwest from the town of Detroit Lakes.

From 1906 to the 1960s, Danish-born brothers Valdemar and Soren Egekvist built a model of immigrant enterprise. They applied Old World skills in a New World economy. Their chain of Minneapolis bakery stores ultimately led to nationally distributed baked goods.

In the mid-twentieth century, scientists struggled to find ways to extract iron ore from the sedimentary rock called taconite, which contains 25 to 30 percent iron. The process that was eventually developed involves crushing the hard rock into a powder-like consistency. The iron ore is then removed with magnets and turned into pellets.