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mtholyoke.edu
"Mary A Brigham Records". Mount Holyoke College Archives and Special Collections, South Hadley, MA. Archived from the original on July 28, 2012. Retrieved October 6, 2013.
"Mary A Brigham Records". Mount Holyoke College Archives and Special Collections, South Hadley, MA. Archived from the original on July 28, 2012. Retrieved October 6, 2013.