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Sap, short season keep Minnesota's maple syrup makers running in the spring

Corinne Peterson
Corinne Peterson, center, and daughter Wendy Berg spread their enthusiasm for tree sap with Clyde, 6, foreground, and Greta, 8, during a collection outing on April 18, 2014. The Bergs of St. Paul spent a long Easter weekend at the property on Star Lake and helped collect sap.