1. Hamilton Elizabeth Letters on Education (Dublin: H. Colbert, 1801), 15, 28–29.
2. Hamilton Letters on Education, 15 28–29.
3. Adams John to Abigail Adams, August 28, 1774; quoted in Edith B. Gelles, Portia: The World of Abigail Adams (Bloomington: Indiana University Press, 1992), 143; quoted in Gelles, Portia, 136.
4. Woody History of Women's Education I 156. For an explanation of the Rule of Three see Church, Education in the United States, 14–15.
5. Church Robert Education in the United States: An Interpretive History (New York: The Free Press, 1976), 25.