Portal:Minnesota/Did you know/5

...that the proglacial lakes of Minnesota (pictured) were massive freshwater lakes covering many times the area of the Great Lakes at the end of the Wisconsin glaciation?
...that the Walker Art Center in Minneapolis began in the home of Harriet G. Walker and her husband T. B. Walker?
...that during World War II, the Roosevelt Community Library in Minneapolis held storytimes for children, partly to help reduce juvenile delinquency in the Standish neighborhood?