Robert Fischer was the most unusual artist ever inspired by Minnehaha Falls. From about 1900 until 1940, he created tens of thousands of delicate sand designs in clear glass containers, using nothing but the natural colored sands found in Minnehaha Park. Only a few of these still exist. Fischer lived in the Falls neighborhood for decades, and also worked as Park Board commissioner, poet, patent medicine manufacturer, and as policeman. Historian Karen Cooper will tell the story of Robert Fischer,…