Benjamin Franklin, William-Temple Franklin (1818). “Memoirs of the Life and Writings of (the Same), Continued to the Time of His Death by William Temple Franklin. - London, H. Colburn 1818”, p.270
Elbert Hubbard (1908). “Little Journeys to the Homes of Great Teachers: Booker T. Washington. Thomas Arnold. Erasmus. Hypatia. St. Benedict. Mary Baker Eddy”