Other Events:

• Graduation: 1906, Poughkeepsie, Dutchess County, New York, USA; Vassar College
• Education: 1921, Manhattan, New York County, New York, USA; took a summer course at Columbia University
• Occupation: 1921, Detroit, Wayne County, Michigan, USA; see Notes

Notes:

The article says that Mary is on the faculty of the Emma Willard School in Detroit, Michigan. Wikipedia says that the Emma Willard School was founded in 1814 in Troy, New York. I haven't found a school with the same name in Detroit. I don't know whether the name of the school is wrong in the article, or the location is wrong in the article. Or maybe there was a school with that name in Detroit in 1921, but has since closed and the record is hard to locate.