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Richard Glenn Gettell ( March 3 , 1912 – August 14 , 1988 ) was an American educator who served as the 13th President of Mount Holyoke College from 1957 - 1968 .
 Glenn Gettell, American, Mount Holyoke College
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Glenn Gettell, American, Mount Holyoke College