Historian and professor Dr. Sally Roesch Wagner has spent decades researching the Gage family in Aberdeen, South Dakota. Decades earlier, she met and befriended the last living member of the family, Matilda Jewell Gage (1886-1986). Dr. Wagner learned much about the Gage family from Matilda that would have been unattainable otherwise. Matilda was the first of three children born to Thomas and So...